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<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
<title>Onions说前端 - 从未如此简单有趣</title>
<subtitle>不要跟我谈理想，我的理想是不上班</subtitle>
<link href="/atom.xml" rel="self"/>
<link href="http://algate.github.io/"/>
<updated>2020-07-29T06:14:05.344Z</updated>
<id>http://algate.github.io/</id>
<author>
<name>onions</name>
</author>
<generator uri="http://hexo.io/">Hexo</generator>
<entry>
<title>前端知识-小程序使用canvas画七巧板</title>
<link href="http://algate.github.io/archives/JS200726.html"/>
<id>http://algate.github.io/archives/JS200726.html</id>
<published>2020-07-26T02:38:30.000Z</published>
<updated>2020-07-29T06:14:05.344Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 14:15:47 GMT+0800 (GMT+08:00) --><p></p><center>每周的工作状态<br><br><img src="/images/tangram/work.gif" alt="image"><br><br>黄·历 - almanac<br><br>综合运势：★ ★ ★ ★ ★<br>爱情运势：★ ★ ★ ★ ★<br>财富运势：★ ★ ★ ★ ★<br>事业学业：★ ★ ★ ★ ★<br><br></center><h3 id="准备事项"><a href="#准备事项" class="headerlink" title="准备事项"></a>准备事项</h3><p>开发工具：uni-app，一套代码编到10个平台；</p><p>开发环境：HBuilder，Vue，Node；</p><p>部署环境：微信小程序；</p><p>如下图所示：</p><p><img src="/images/tangram/tangram.png" alt="image"></p><h3 id="画七巧板的点位值："><a href="#画七巧板的点位值：" class="headerlink" title="画七巧板的点位值："></a>画七巧板的点位值：</h3><p>按照七巧板的图，把七巧板的每个色块按照｛x,y｝的对象方式存储在一个数组里。有七个色块，数组就有七个值：每个数组按照比例存储四块的每个点的位置信息；每个色块再加个颜色值，这个颜色随自己喜好添加。</p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line">tangram: [</span><br><span class="line"> { <span class="attr">p</span>: [{ <span class="attr">x</span>: <span class="number">0</span>, <span class="attr">y</span>: <span class="number">0</span> }, { <span class="attr">x</span>: <span class="number">800</span>, <span class="attr">y</span>: <span class="number">0</span> }, { <span class="attr">x</span>: <span class="number">400</span>, <span class="attr">y</span>: <span class="number">400</span> }], <span class="attr">color</span>: <span class="string">'#caff67'</span> },</span><br><span class="line"> { <span class="attr">p</span>: [{ <span class="attr">x</span>: <span class="number">0</span>, <span class="attr">y</span>: <span class="number">0</span> }, { <span class="attr">x</span>: <span class="number">400</span>, <span class="attr">y</span>: <span class="number">400</span> }, { <span class="attr">x</span>: <span class="number">0</span>, <span class="attr">y</span>: <span class="number">800</span> }], <span class="attr">color</span>: <span class="string">'#67bccf'</span> },</span><br><span class="line"> { <span class="attr">p</span>: [{ <span class="attr">x</span>: <span class="number">800</span>, <span class="attr">y</span>: <span class="number">0</span> }, { <span class="attr">x</span>: <span class="number">800</span>, <span class="attr">y</span>: <span class="number">400</span> }, { <span class="attr">x</span>: <span class="number">600</span>, <span class="attr">y</span>: <span class="number">600</span> }, { <span class="attr">x</span>: <span class="number">600</span>, <span class="attr">y</span>: <span class="number">200</span> }], <span class="attr">color</span>: <span class="string">'#cf3d61'</span> },</span><br><span class="line"> { <span class="attr">p</span>: [{ <span class="attr">x</span>: <span class="number">600</span>, <span class="attr">y</span>: <span class="number">200</span> }, { <span class="attr">x</span>: <span class="number">600</span>, <span class="attr">y</span>: <span class="number">600</span> }, { <span class="attr">x</span>: <span class="number">400</span>, <span class="attr">y</span>: <span class="number">400</span> }], <span class="attr">color</span>: <span class="string">'#f9f51a'</span> },</span><br><span class="line"> { <span class="attr">p</span>: [{ <span class="attr">x</span>: <span class="number">400</span>, <span class="attr">y</span>: <span class="number">400</span> }, { <span class="attr">x</span>: <span class="number">600</span>, <span class="attr">y</span>: <span class="number">600</span> }, { <span class="attr">x</span>: <span class="number">400</span>, <span class="attr">y</span>: <span class="number">800</span> }, { <span class="attr">x</span>: <span class="number">200</span>, <span class="attr">y</span>: <span class="number">600</span> }], <span class="attr">color</span>: <span class="string">'#a594c0'</span> },</span><br><span class="line"> { <span class="attr">p</span>: [{ <span class="attr">x</span>: <span class="number">200</span>, <span class="attr">y</span>: <span class="number">600</span> }, { <span class="attr">x</span>: <span class="number">400</span>, <span class="attr">y</span>: <span class="number">800</span> }, { <span class="attr">x</span>: <span class="number">0</span>, <span class="attr">y</span>: <span class="number">800</span> }], <span class="attr">color</span>: <span class="string">'#fa8ccc'</span> },</span><br><span class="line"> { <span class="attr">p</span>: [{ <span class="attr">x</span>: <span class="number">800</span>, <span class="attr">y</span>: <span class="number">400</span> }, { <span class="attr">x</span>: <span class="number">800</span>, <span class="attr">y</span>: <span class="number">800</span> }, { <span class="attr">x</span>: <span class="number">400</span>, <span class="attr">y</span>: <span class="number">800</span> }], <span class="attr">color</span>: <span class="string">'#f6ca29'</span> }</span><br><span class="line">]</span><br></pre></td></tr></table></figure><h3 id="画七巧板"><a href="#画七巧板" class="headerlink" title="画七巧板"></a>画七巧板</h3><p>正常浏览器页面写canvas：</p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">var</span> canvas=<span class="built_in">document</span>.getElementById(<span class="string">"canvas"</span>);</span><br><span class="line"><span class="keyword">var</span> context=canvas.getContext(<span class="string">"2d"</span>);</span><br></pre></td></tr></table></figure><p>基于uni-app实现小程序，这样是获取不到的。☺</p><h3 id="html添加canvas元素："><a href="#html添加canvas元素：" class="headerlink" title="html添加canvas元素："></a>html添加canvas元素：</h3><p>HTML页面写canvas：<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><template></span><br><span class="line"> <view><canvas style="width: 100vw;height: 100vw;" type="2d" canvas-id="tangram" id="tangram"></canvas></view></span><br><span class="line"><<span class="regexp">/template></span></span><br></pre></td></tr></table></figure><p></p><h4 id="1-上述vue的html代码编译为h5："><a href="#1-上述vue的html代码编译为h5：" class="headerlink" title="1.上述vue的html代码编译为h5："></a>1.上述vue的html代码编译为h5：</h4><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><uni-canvas data-v<span class="number">-2</span>fdafd79=<span class="string">""</span> canvas-id=<span class="string">"tangram"</span> type=<span class="string">"2d"</span> id=<span class="string">"tangram"</span> style=<span class="string">"width: 100vw; height: 100vw;"</span>></span><br><span class="line"> <canvas width=<span class="string">"393"</span> height=<span class="string">"393"</span> style=<span class="string">"height: 393px; width: 393px;"</span>></canvas></span><br><span class="line"> <div style=<span class="string">"position: absolute; top: 0px; left: 0px; width: 100%; height: 100%; overflow: hidden;"</span>></div></span><br><span class="line"><<span class="regexp">/uni-canvas></span></span><br></pre></td></tr></table></figure><h4 id="2-编译为小程序为："><a href="#2-编译为小程序为：" class="headerlink" title="2.编译为小程序为："></a>2.编译为小程序为：</h4><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><canvas canvas-id=<span class="string">"tangram"</span> id=<span class="string">"tangram"</span> style=<span class="string">"width: 100vw;height: 100vw;"</span> type=<span class="string">"2d"</span>></canvas></span><br></pre></td></tr></table></figure><h3 id="获取canvas元素："><a href="#获取canvas元素：" class="headerlink" title="获取canvas元素："></a>获取canvas元素：</h3><h4 id="H5获取canvas元素："><a href="#H5获取canvas元素：" class="headerlink" title="H5获取canvas元素："></a>H5获取canvas元素：</h4><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">this</span>.canvas = <span class="built_in">document</span>.querySelector(<span class="string">'#tangram canvas'</span>);</span><br><span class="line"><span class="keyword">this</span>.ctx = <span class="keyword">this</span>.canvas.getContext(<span class="string">'2d'</span>);</span><br></pre></td></tr></table></figure><h4 id="小程序获取canvas元素："><a href="#小程序获取canvas元素：" class="headerlink" title="小程序获取canvas元素："></a>小程序获取canvas元素：</h4><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> query = uni.createSelectorQuery();</span><br><span class="line">query</span><br><span class="line"> .select(<span class="string">'#tangram'</span>)</span><br><span class="line"> .fields({ <span class="attr">node</span>: <span class="literal">true</span>, <span class="attr">size</span>: <span class="literal">true</span> })</span><br><span class="line"> .exec(<span class="function"><span class="params">res</span> =></span> {</span><br><span class="line"> <span class="keyword">this</span>.canvas = res[<span class="number">0</span>].node;</span><br><span class="line"> <span class="keyword">this</span>.ctx = <span class="keyword">this</span>.canvas.getContext(<span class="string">'2d'</span>);</span><br><span class="line"> }</span><br></pre></td></tr></table></figure><blockquote><blockquote><p>由于不同手机的分辨率和宽度像素不确定，还有手机的像素密度值。我们还需要调整七巧板点位置的相对比例（这个下边会有相关代码）：</p></blockquote></blockquote><p>此处我们按照整个屏幕来调整，首先先获取手机相关信息，除此之外手机还有一个像素密度值pixelRatio：<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">uni.getSystemInfo({</span><br><span class="line"> success: <span class="function"><span class="params">res</span> =></span> {</span><br><span class="line"> <span class="keyword">this</span>.systemInfo = res;</span><br><span class="line"> <span class="built_in">console</span>.log(res);</span><br><span class="line"> }</span><br><span class="line">})</span><br></pre></td></tr></table></figure><p></p><p>获取系统信息：<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line">errMsg: <span class="string">"getSystemInfo:ok"</span></span><br><span class="line">language: <span class="string">"zh-CN"</span></span><br><span class="line">model: <span class="string">"iPhone"</span></span><br><span class="line">pixelRatio: <span class="number">2</span></span><br><span class="line">platform: <span class="string">"ios"</span></span><br><span class="line">screenHeight: <span class="number">667</span></span><br><span class="line">screenWidth: <span class="number">375</span></span><br><span class="line">statusBarHeight: <span class="number">0</span></span><br><span class="line">system: <span class="string">"iOS 13.2.3"</span></span><br><span class="line">windowBottom: <span class="number">0</span></span><br><span class="line">windowHeight: <span class="number">623</span></span><br><span class="line">windowTop: <span class="number">44</span></span><br><span class="line">windowWidth: <span class="number">375</span></span><br></pre></td></tr></table></figure><p></p><h3 id="根据系统和屏幕信息给canvas设置width和height："><a href="#根据系统和屏幕信息给canvas设置width和height：" class="headerlink" title="根据系统和屏幕信息给canvas设置width和height："></a>根据系统和屏幕信息给canvas设置width和height：</h3><p>给canvas设置width和height：</p><h4 id="h5设置为："><a href="#h5设置为：" class="headerlink" title="h5设置为："></a>h5设置为：</h4><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> dpr = uni.getSystemInfoSync().pixelRatio;</span><br><span class="line"><span class="keyword">this</span>.canvas.width = <span class="keyword">this</span>.systemInfo.windowWidth * dpr;</span><br><span class="line"><span class="keyword">this</span>.canvas.height = <span class="keyword">this</span>.systemInfo.windowWidth * dpr;</span><br></pre></td></tr></table></figure><h4 id="小程序设置为："><a href="#小程序设置为：" class="headerlink" title="小程序设置为："></a>小程序设置为：</h4><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> dpr = uni.getSystemInfoSync().pixelRatio;</span><br><span class="line"><span class="keyword">this</span>.canvas.width = res[<span class="number">0</span>].width * dpr;</span><br><span class="line"><span class="keyword">this</span>.canvas.height = res[<span class="number">0</span>].width * dpr;</span><br></pre></td></tr></table></figure><p>由于手机端有pixelRatio像素密度，真实的手机端需要canvas缩放，负责显示为半个canvas，所以在小程序端需要添加（h5端添加显示错乱）：</p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">this</span>.ctx.scale(dpr, dpr);</span><br></pre></td></tr></table></figure><h3 id="用canvas画七巧板："><a href="#用canvas画七巧板：" class="headerlink" title="用canvas画七巧板："></a>用canvas画七巧板：</h3><p>七巧板点位置的数字：</p><p>【0，200，400，600，800】</p><p>如果不调整，不是全屏展示整个七巧板，可以按照最小手机的分辨率相对按比例缩小；如果要全屏展示七巧板，我们需要获取屏幕的宽度，然后按照比例进行缩放上述点位置；</p><p>获取到canvas，然后接下来就是画七巧板。我们吧这个方法提出来直接写个方法，获取到canvas，执行this.draw();</p><p>画之前，先按照比例缩放七巧板点位置的比例：<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">this</span>.tangram.map(<span class="function"><span class="params">plece</span> =></span> {</span><br><span class="line"> <span class="keyword">return</span> plece.p.map(<span class="function"><span class="params">coordinate</span> =></span> {</span><br><span class="line"> <span class="keyword">if</span> (coordinate.x === <span class="number">200</span>) {</span><br><span class="line"> coordinate.x = <span class="keyword">this</span>.systemInfo.windowWidth / <span class="number">4</span>;</span><br><span class="line"> } <span class="keyword">else</span> <span class="keyword">if</span> (coordinate.x === <span class="number">400</span>) {</span><br><span class="line"> coordinate.x = <span class="keyword">this</span>.systemInfo.windowWidth / <span class="number">2</span>;</span><br><span class="line"> } <span class="keyword">else</span> <span class="keyword">if</span> (coordinate.x === <span class="number">600</span>) {</span><br><span class="line"> coordinate.x = (<span class="keyword">this</span>.systemInfo.windowWidth / <span class="number">4</span>) * <span class="number">3</span>;</span><br><span class="line"> } <span class="keyword">else</span> <span class="keyword">if</span> (coordinate.x === <span class="number">800</span>) {</span><br><span class="line"> coordinate.x = <span class="keyword">this</span>.systemInfo.windowWidth;</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">if</span> (coordinate.y === <span class="number">200</span>) {</span><br><span class="line"> coordinate.y = <span class="keyword">this</span>.systemInfo.windowWidth / <span class="number">4</span>;</span><br><span class="line"> } <span class="keyword">else</span> <span class="keyword">if</span> (coordinate.y === <span class="number">400</span>) {</span><br><span class="line"> coordinate.y = <span class="keyword">this</span>.systemInfo.windowWidth / <span class="number">2</span>;</span><br><span class="line"> } <span class="keyword">else</span> <span class="keyword">if</span> (coordinate.y === <span class="number">600</span>) {</span><br><span class="line"> coordinate.y = (<span class="keyword">this</span>.systemInfo.windowWidth / <span class="number">4</span>) * <span class="number">3</span>;</span><br><span class="line"> } <span class="keyword">else</span> <span class="keyword">if</span> (coordinate.y === <span class="number">800</span>) {</span><br><span class="line"> coordinate.y = <span class="keyword">this</span>.systemInfo.windowWidth;</span><br><span class="line"> }</span><br><span class="line"> });</span><br><span class="line">});</span><br><span class="line"><span class="keyword">for</span> (<span class="keyword">var</span> i = <span class="number">0</span>; i < <span class="keyword">this</span>.tangram.length; i++) {</span><br><span class="line"> <span class="keyword">this</span>.draw(<span class="keyword">this</span>.tangram[i], ctx);</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p></p><p>draw()方法：<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line">draw(plece, cxt) {</span><br><span class="line"> cxt.beginPath();</span><br><span class="line"> cxt.moveTo(plece.p[<span class="number">0</span>].x, plece.p[<span class="number">0</span>].y);</span><br><span class="line"> <span class="keyword">for</span> (<span class="keyword">var</span> i = <span class="number">1</span>; i < plece.p.length; i++) {</span><br><span class="line"> cxt.lineTo(plece.p[i].x, plece.p[i].y);</span><br><span class="line"> }</span><br><span class="line"> cxt.closePath();</span><br><span class="line"> cxt.fillStyle = plece.color;</span><br><span class="line"> cxt.fill();</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p></p><p>画七巧板</p><p>代码中使用this，需要data里边定义变量：<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">systemInfo: {},</span><br><span class="line">canvas: <span class="literal">null</span>,</span><br><span class="line">ctx: <span class="literal">null</span>,</span><br><span class="line">tangram: []</span><br></pre></td></tr></table></figure><p></p><p>完结，如果想体验直接扫码访问小程序，进入首页，点击体验或者授权都可以，</p><p>菜单canvas下，点击Tangram.js，就可以浏览七巧板效果；</p><h3 id="体验地址"><a href="#体验地址" class="headerlink" title="体验地址"></a>体验地址</h3><h4 id="小程序码："><a href="#小程序码：" class="headerlink" title="小程序码："></a>小程序码：</h4><p><img src="/img/wechatcode.png" alt="image"></p><h4 id="h5访问地址："><a href="#h5访问地址：" class="headerlink" title="h5访问地址："></a>h5访问地址：</h4><p><a href="https://algate.github.io/HammerUI/">h5展示-浏览器打开手机浏览模式F12</a></p><h4 id="公众号访问："><a href="#公众号访问：" class="headerlink" title="公众号访问："></a>公众号访问：</h4><p><img src="/img/wx-onion.png" alt="image"></p><!-- rebuild by neat -->]]></content>
<summary type="html">
<!-- build time:Wed Jul 29 2020 14:15:47 GMT+0800 (GMT+08:00) --><p></p><center>每周的工作状态<br><br><img src="/images/tangram/work.gif" alt="ima
</summary>
<category term="前端" scheme="http://algate.github.io/categories/%E5%89%8D%E7%AB%AF/"/>
<category term="小程序" scheme="http://algate.github.io/tags/%E5%B0%8F%E7%A8%8B%E5%BA%8F/"/>
</entry>
<entry>
<title>承认别人的牛逼才是真正的牛逼</title>
<link href="http://algate.github.io/archives/54500.html"/>
<id>http://algate.github.io/archives/54500.html</id>
<published>2020-03-26T12:19:00.000Z</published>
<updated>2020-03-26T09:33:56.095Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><blockquote><blockquote><p>这世间有一种恶，叫见不得你好。<br>你有没有发现，越是无能的人，越是不愿意承认别人的能力。<br>但其实，承认别人的牛逼，才是真正的牛逼。</p></blockquote></blockquote><p><img src="/images/note01-01.jpg" alt="image"></p><p>这世间有一种恶，叫见不得你好。</p><p>尤其是在当下互联网生态下，隔着屏幕“越是得不到，越是要攻击。”</p><p>当财富蜂拥入驻到一个极其平凡人的身上时，周围人则会想尽办法将一切晦暗的思想嫁接在他身上。</p><p>也将这个社会的戾气，越引越爆。</p><p>在这些眼里，别人的优秀都是假的。</p><p>仿佛是给屌丝们给自己找了个借口：</p><p>“这世上根本就没有人真正做到优秀，所以我做不到也很正常。”</p><p>一副见不得别人好的丑恶嘴脸。</p><p>古人说富贵当思原由，不是无道理。</p><p>人活在世，不要老问凭什么，要多问为什么？</p><p>想想什么网红这么多，只有李佳琦和李子柒能够脱颖而出。</p><p>好好思考一下，为什么条条道路通罗马，而你活在非洲。</p><p>为什么成功的那个人不是你？</p><p>为什么加薪的那个人不是你？</p><p>不思考不反省，思维也就越发贫穷，穷则生戾。</p><p>如此循环…</p><p>我们都听过这么一句话：“比你优秀的人，比你更努力。”</p><p>而不努力的你，正在掉进“贫困陷井”中。</p><p>换句话说，久而久之，穷不仅仅是没钱这么简单，而是思维上的贫穷。</p><p>穷人缺什么？</p><p>表面缺资金，本质缺野心，脑子缺观念，机会缺了解，骨子缺勇气，改变缺行动，事业缺毅力。</p><p>影视剧《新上海滩》中有这样一个镜头，阅历丰厚的冯敬尧问年轻气盛的丁力：</p><p>“穷人最缺的是什么？”</p><p>丁力回答：“穷人最缺的当然是钱。”</p><p>冯敬尧摇摇头说：“是野心。”</p><p>“老天安排你是个穷人，你若认命你就会穷一辈子，若不认命就得有改变的野心。”</p><p>没有了改变的野心，自然就没有勇气，又谈何毅力？</p><p>这背后是一个个“穷人”逆袭，不认命的故事。</p><p>而这些酸他们的人，不过一群躲在屏幕后面loser。</p><p>人穷不可怕，心穷才是真正的可悲。</p><p>“长得好看，肯定是整的。”</p><p>“嫁得好，肯定是为了钱。”</p><p>“升职加薪，肯定是背后有关系。”</p><p>你有没有发现，越是无能的人，越是不愿意承认别人的能力。</p><p>但其实，承认别人的牛逼，才是真正的牛逼。</p><!-- rebuild by neat -->]]></content>
<summary type="html">
<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><blockquote><blockquote><p>这世间有一种恶，叫见不得你好。<br>你有没有发现，越是无能的人，越是不愿意承认别人的能力。<b
</summary>
<category term="日记" scheme="http://algate.github.io/categories/%E6%97%A5%E8%AE%B0/"/>
<category term="心态" scheme="http://algate.github.io/tags/%E5%BF%83%E6%80%81/"/>
</entry>
<entry>
<title>ES6下对象的解构赋值</title>
<link href="http://algate.github.io/archives/JS191228.html"/>
<id>http://algate.github.io/archives/JS191228.html</id>
<published>2019-12-28T02:38:30.000Z</published>
<updated>2020-01-02T08:18:00.531Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h2 id="对象的解构赋值"><a href="#对象的解构赋值" class="headerlink" title="对象的解构赋值"></a>对象的解构赋值</h2><p>对象的解构与数组有一个重要的不同。数组的元素是按次序排列的，变量的取值由它的位置决定；而对象的属性没有次序，变量必须与属性同名，才能取到正确的值。<br>先看个例子：<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">let</span> { bar, foo } = { <span class="attr">foo</span>: <span class="string">"aaa"</span>, <span class="attr">bar</span>: <span class="string">"bbb"</span> };</span><br><span class="line">foo <span class="comment">// "aaa"</span></span><br><span class="line">bar <span class="comment">// "bbb"</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">let</span> { baz } = { <span class="attr">foo</span>: <span class="string">"aaa"</span>, <span class="attr">bar</span>: <span class="string">"bbb"</span> };</span><br><span class="line">baz <span class="comment">// undefined</span></span><br></pre></td></tr></table></figure><p></p><p>那么再来看个<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">let</span> { <span class="attr">foo</span>: baz } = { <span class="attr">foo</span>: <span class="string">"aaa"</span>, <span class="attr">bar</span>: <span class="string">"bbb"</span> };</span><br><span class="line">baz <span class="comment">// "aaa"</span></span><br><span class="line">foo <span class="comment">// error: foo is not defined</span></span><br></pre></td></tr></table></figure><p></p><p>foo为啥会报错呢？<br>大家需要首先记住的是：<strong>对象的解构赋值的内部机制，是先找到同名属性，然后再赋给对应的变量。真正被赋值的是后者，而不是前者。</strong><br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">let</span> obj = {</span><br><span class="line"> p: [</span><br><span class="line"> <span class="string">'Hello'</span>,</span><br><span class="line"> { <span class="attr">y</span>: <span class="string">'World'</span> }</span><br><span class="line"> ]</span><br><span class="line">};</span><br><span class="line"></span><br><span class="line"><span class="keyword">let</span> { <span class="attr">p</span>: [x, { y }] } = obj;</span><br><span class="line">x <span class="comment">// "Hello"</span></span><br><span class="line">y <span class="comment">// "World"</span></span><br></pre></td></tr></table></figure><p></p><p>大家猜猜 打印p的话，会是什么结果呢？显而易见，大家自己打印看看。<br>注意，p是模式，不是变量。偏要赋值就要变成变量：<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">let</span> { p, <span class="attr">p</span>: [x, { y }] } = obj;</span><br></pre></td></tr></table></figure><p></p><p>我们看看复杂一点的例子：<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> node = {</span><br><span class="line"> loc: {</span><br><span class="line"> start: {</span><br><span class="line"> line: <span class="number">1</span>,</span><br><span class="line"> column: <span class="number">5</span></span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line">};</span><br><span class="line"></span><br><span class="line"><span class="keyword">let</span> { loc, <span class="attr">loc</span>: { start }, <span class="attr">loc</span>: { <span class="attr">start</span>: { line }} } = node;</span><br><span class="line">line <span class="comment">// 1</span></span><br><span class="line">collumn <span class="comment">// ??</span></span><br><span class="line">loc <span class="comment">// ??</span></span><br><span class="line">start <span class="comment">// ??</span></span><br></pre></td></tr></table></figure><p></p><p>大家说说结果：对了就可以说明你的掌握模式和变量的区别了。<br>解释：<strong>上面代码有三次解构赋值，分别是对loc、start、line三个属性的解构赋值。注意，最后一次对line属性的解构赋值之中，只有line是变量，loc和start都是模式，不是变量。</strong>（概括的说：冒号左边的都是模式，没有冒号或者冒号右边的是变量）</p><p>对象的解构也可以指定默认值。</p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">var</span> {x = <span class="number">3</span>} = {};</span><br><span class="line">x <span class="comment">// 3</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">var</span> {x, y = <span class="number">5</span>} = {<span class="attr">x</span>: <span class="number">1</span>};</span><br><span class="line">x <span class="comment">// 1</span></span><br><span class="line">y <span class="comment">// 5</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">var</span> {<span class="attr">x</span>: y = <span class="number">3</span>} = {};</span><br><span class="line">y <span class="comment">// 3</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">var</span> {<span class="attr">x</span>: y = <span class="number">3</span>} = {<span class="attr">x</span>: <span class="number">5</span>};</span><br><span class="line">y <span class="comment">// 5</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">var</span> { <span class="attr">message</span>: msg = <span class="string">'Something went wrong'</span> } = {};</span><br><span class="line">msg <span class="comment">// "Something went wrong"</span></span><br></pre></td></tr></table></figure><blockquote><p>还有一个需要注意的是：</p></blockquote><p>默认值生效的条件是，对象的属性值严格等于undefined。</p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">var</span> {x = <span class="number">3</span>} = {<span class="attr">x</span>: <span class="literal">undefined</span>};</span><br><span class="line">x <span class="comment">// 3</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">var</span> {x = <span class="number">3</span>} = {<span class="attr">x</span>: <span class="literal">null</span>};</span><br><span class="line">x <span class="comment">// null</span></span><br></pre></td></tr></table></figure><p>最重要的对象解构赋值就是这些。完……</p><!-- rebuild by neat -->]]></content>
<summary type="html">
<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h2 id="对象的解构赋值"><a href="#对象的解构赋值" class="headerlink" title="对象的解构赋值"></a>
</summary>
<category term="前端" scheme="http://algate.github.io/categories/%E5%89%8D%E7%AB%AF/"/>
<category term="ES6" scheme="http://algate.github.io/tags/ES6/"/>
</entry>
<entry>
<title>Powershell使用命令</title>
<link href="http://algate.github.io/archives/JS191226.html"/>
<id>http://algate.github.io/archives/JS191226.html</id>
<published>2019-12-26T04:09:30.000Z</published>
<updated>2019-12-25T06:05:25.620Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h1 id="1-PS工具常用命令集合："><a href="#1-PS工具常用命令集合：" class="headerlink" title="1 PS工具常用命令集合："></a>1 PS工具常用命令集合：</h1><h2 id="1-1-在当前文件夹下打开PS："><a href="#1-1-在当前文件夹下打开PS：" class="headerlink" title="1.1 在当前文件夹下打开PS："></a>1.1 在当前文件夹下打开PS：</h2><p>按住Shift 右击鼠标<br>选择<code>在此处打开Powershell窗口</code></p><h2 id="1-2-PS中打开当前文件夹"><a href="#1-2-PS中打开当前文件夹" class="headerlink" title="1.2 PS中打开当前文件夹"></a>1.2 PS中打开当前文件夹</h2><p>有时候，开着PS可是呢，要打开当前资源管理器，对文件进行处理，目录太深，如何快捷打开当前文件夹<br>有了PS当然是通过命令来处理了：<br></p><figure class="highlight cmd"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="built_in">start</span> .</span><br></pre></td></tr></table></figure><p></p><blockquote><p>这是最简单的，当然还有别的方法：<br>explorer(gl) 如果不输入<code>(gl)</code>则是打开计算机(Win+E)<br>……别的不写了，太复杂了，有一个就够用了</p></blockquote><h2 id="1-3-PS中新建文件-文件夹"><a href="#1-3-PS中新建文件-文件夹" class="headerlink" title="1.3 PS中新建文件/文件夹"></a>1.3 PS中新建文件/文件夹</h2><figure class="highlight cmd"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">新建文件</span><br><span class="line">New-Item file (只能新建文件)</span><br></pre></td></tr></table></figure><figure class="highlight cmd"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">新建文件夹</span><br><span class="line"><span class="built_in">md</span>/<span class="built_in">mkdir</span> filefolder （只能新建文件夹）</span><br></pre></td></tr></table></figure><figure class="highlight cmd"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">新建文件/文件夹</span><br><span class="line">New-Item filefolder -<span class="built_in">type</span> File/Directory</span><br></pre></td></tr></table></figure><h2 id="1-4-PS中删除文件和文件夹"><a href="#1-4-PS中删除文件和文件夹" class="headerlink" title="1.4 PS中删除文件和文件夹"></a>1.4 PS中删除文件和文件夹</h2><figure class="highlight cmd"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">Remove-Item file/filefolder</span><br></pre></td></tr></table></figure><figure class="highlight cmd"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">ri/<span class="built_in">rd</span>/rm/<span class="built_in">rmdir</span>/<span class="built_in">erase</span> file/filefolder</span><br></pre></td></tr></table></figure><h2 id="1-5-打开cmd"><a href="#1-5-打开cmd" class="headerlink" title="1.5 打开cmd"></a>1.5 打开cmd</h2><figure class="highlight cmd"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="built_in">start</span> <span class="built_in">cmd</span></span><br></pre></td></tr></table></figure><h2 id="1-6-资源管理器打开文件夹"><a href="#1-6-资源管理器打开文件夹" class="headerlink" title="1.6 资源管理器打开文件夹"></a>1.6 资源管理器打开文件夹</h2><figure class="highlight cmd"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="built_in">start</span> folder</span><br></pre></td></tr></table></figure><blockquote><p>md 为mkdir的缩写</p></blockquote><h2 id="1-5-PS查看文件内容"><a href="#1-5-PS查看文件内容" class="headerlink" title="1.5 PS查看文件内容"></a>1.5 PS查看文件内容</h2><figure class="highlight cmd"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">get-content file （后缀也得加上）</span><br></pre></td></tr></table></figure><h2 id="1-6-PS清空命令行"><a href="#1-6-PS清空命令行" class="headerlink" title="1.6 PS清空命令行"></a>1.6 PS清空命令行</h2><figure class="highlight cmd"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="built_in">cls</span></span><br></pre></td></tr></table></figure><h2 id="1-7-PS目录查找"><a href="#1-7-PS目录查找" class="headerlink" title="1.7 PS目录查找"></a>1.7 PS目录查找</h2><figure class="highlight cmd"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="built_in">cd</span>.. (返回上级菜单)</span><br><span class="line"><span class="built_in">cd</span> filefloder (访问目录问价夹)</span><br></pre></td></tr></table></figure><!-- rebuild by neat -->]]></content>
<summary type="html">
<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h1 id="1-PS工具常用命令集合："><a href="#1-PS工具常用命令集合：" class="headerlink" title="1
</summary>
<category term="计算机" scheme="http://algate.github.io/categories/%E8%AE%A1%E7%AE%97%E6%9C%BA/"/>
<category term="计算机" scheme="http://algate.github.io/tags/%E8%AE%A1%E7%AE%97%E6%9C%BA/"/>
<category term="Powershell" scheme="http://algate.github.io/tags/Powershell/"/>
</entry>
<entry>
<title>删除系统找不到的文件</title>
<link href="http://algate.github.io/archives/JS191225.html"/>
<id>http://algate.github.io/archives/JS191225.html</id>
<published>2019-12-25T14:37:30.000Z</published>
<updated>2019-12-25T02:52:14.812Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h2 id="删除文件时提示“找不到该项目”，怎么解决"><a href="#删除文件时提示“找不到该项目”，怎么解决" class="headerlink" title="删除文件时提示“找不到该项目”，怎么解决?"></a>删除文件时提示“找不到该项目”，怎么解决?</h2><p><img src="/images/20191225/computer-del.jpg" alt="image"></p><p>经过三番五次的尝试，发现都不行，你是不是想重启电脑试试！</p><p>现在有个很简单的方法，试了一下，果然好用，推荐个大家</p><h3 id="1-新建一个文件"><a href="#1-新建一个文件" class="headerlink" title="1.新建一个文件"></a>1.新建一个文件</h3><p>名字为啥无所谓</p><figure class="highlight stylus"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">New-Item <span class="selector-tag">del</span>.bat</span><br></pre></td></tr></table></figure><h3 id="2-打开文件输入以下运行命令"><a href="#2-打开文件输入以下运行命令" class="headerlink" title="2.打开文件输入以下运行命令"></a>2.打开文件输入以下运行命令</h3><figure class="highlight jboss-cli"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">DEL <span class="string">/F</span> <span class="string">/A</span> <span class="string">/Q</span> \\?\%1</span><br><span class="line">RD <span class="string">/S</span> <span class="string">/Q</span> \\?\%1</span><br></pre></td></tr></table></figure><h3 id="3-删除文件"><a href="#3-删除文件" class="headerlink" title="3.删除文件"></a>3.删除文件</h3><p>把系统不存在的文件或者文件夹拖到该bat文件上。你就会发现神奇的事情!</p><!-- rebuild by neat -->]]></content>
<summary type="html">
<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h2 id="删除文件时提示“找不到该项目”，怎么解决"><a href="#删除文件时提示“找不到该项目”，怎么解决" class="header
</summary>
<category term="计算机" scheme="http://algate.github.io/categories/%E8%AE%A1%E7%AE%97%E6%9C%BA/"/>
<category term="计算机" scheme="http://algate.github.io/tags/%E8%AE%A1%E7%AE%97%E6%9C%BA/"/>
<category term="技术支持" scheme="http://algate.github.io/tags/%E6%8A%80%E6%9C%AF%E6%94%AF%E6%8C%81/"/>
</entry>
<entry>
<title>JavaScript-Array迭代器方法</title>
<link href="http://algate.github.io/archives/JS191224.html"/>
<id>http://algate.github.io/archives/JS191224.html</id>
<published>2019-12-24T08:49:30.000Z</published>
<updated>2020-05-29T07:17:39.751Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h3 id="【1】-第一组迭代器方法不产生任何新数组，要么对于数组中的每个元素执行某种操作，要么返回一个值；"><a href="#【1】-第一组迭代器方法不产生任何新数组，要么对于数组中的每个元素执行某种操作，要么返回一个值；" class="headerlink" title="【1】 第一组迭代器方法不产生任何新数组，要么对于数组中的每个元素执行某种操作，要么返回一个值；"></a>【1】 第一组迭代器方法<code>不产生任何新数组</code>，要么对于数组中的每个元素执行某种操作，要么返回一个值；</h3><h4 id="1-forEach-接受一个函数作为参数，对数组中的每个元素使用该函数"><a href="#1-forEach-接受一个函数作为参数，对数组中的每个元素使用该函数" class="headerlink" title="1.forEach() 接受一个函数作为参数，对数组中的每个元素使用该函数"></a>1.forEach() 接受一个函数作为参数，对数组中的每个元素使用该函数</h4><figure class="highlight matlab"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">square</span><span class="params">(num)</span> {</span></span><br><span class="line"> print(num, num * num);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">var nums = [];</span><br><span class="line"><span class="keyword">for</span> (var <span class="built_in">i</span> = <span class="number">0</span>; <span class="built_in">i</span> < <span class="number">10</span>; ++<span class="built_in">i</span>) {</span><br><span class="line"> nums[<span class="built_in">i</span>] = <span class="built_in">i</span>+<span class="number">1</span>;</span><br><span class="line">}</span><br><span class="line">nums.forEach(square);</span><br></pre></td></tr></table></figure><a id="more"></a><h4 id="2-every-接受一个返回值为布尔类型的函数，对数组中的每个元素使用该函数。对于所有的元素，该函数返回true，则该方法返回true"><a href="#2-every-接受一个返回值为布尔类型的函数，对数组中的每个元素使用该函数。对于所有的元素，该函数返回true，则该方法返回true" class="headerlink" title="2.every() 接受一个返回值为布尔类型的函数，对数组中的每个元素使用该函数。对于所有的元素，该函数返回true，则该方法返回true"></a>2.every() 接受一个返回值为布尔类型的函数，对数组中的每个元素使用该函数。对于所有的元素，该函数返回true，则该方法返回true</h4><figure class="highlight maxima"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line">function isEven(<span class="built_in">num</span>) {</span><br><span class="line"> <span class="built_in">return</span> <span class="built_in">num</span> <span class="symbol">%</span> <span class="number">2</span> == <span class="number">0</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="built_in">var</span> nums = [<span class="number">2</span>,<span class="number">4</span>,<span class="number">6</span>,<span class="number">8</span>,<span class="number">10</span>];</span><br><span class="line"><span class="built_in">var</span> <span class="built_in">even</span> = nums.<span class="built_in">every</span>(isEven);</span><br><span class="line"><span class="keyword">if</span> (<span class="built_in">even</span>) {</span><br><span class="line"> <span class="built_in">print</span>(<span class="string">"all numbers are even"</span>);</span><br><span class="line">}</span><br><span class="line"><span class="keyword">else</span> {</span><br><span class="line"> <span class="built_in">print</span>(<span class="string">"some numbers are odd"</span>);</span><br><span class="line">}</span><br></pre></td></tr></table></figure><blockquote><p>some() 方法也接受一个返回值为布尔类型的函数，只要有一个元素使得该函数返回true，该方法就返回true。</p></blockquote><figure class="highlight lsl"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br></pre></td><td class="code"><pre><span class="line">function isEven(num) {</span><br><span class="line"> return num % <span class="number">2</span> == <span class="number">0</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">var nums = [<span class="number">1</span>,<span class="number">2</span>,<span class="number">3</span>,<span class="number">4</span>,<span class="number">5</span>,<span class="number">6</span>,<span class="number">7</span>,<span class="number">8</span>,<span class="number">9</span>,<span class="number">10</span>];</span><br><span class="line">var someEven = nums.some(isEven);</span><br><span class="line">if (someEven) {</span><br><span class="line"> print(<span class="string">"some numbers are even"</span>);</span><br><span class="line">}</span><br><span class="line">else {</span><br><span class="line"> print(<span class="string">"no numbers are even"</span>);</span><br><span class="line">}</span><br><span class="line">nums = [<span class="number">1</span>,<span class="number">3</span>,<span class="number">5</span>,<span class="number">7</span>,<span class="number">9</span>];</span><br><span class="line">var someEven = nums.some(isEven);</span><br><span class="line">if (someEven) {</span><br><span class="line"> print(<span class="string">"some numbers are even"</span>);</span><br><span class="line">}</span><br><span class="line">else {</span><br><span class="line"> print(<span class="string">"no numbers are even"</span>);</span><br><span class="line">}</span><br></pre></td></tr></table></figure><h4 id="3-reduce-接受一个函数，返回一个值。-它会从一个累加值开始，不断对累加值和数组中的后续元素调用该函数，最后返回累加值。"><a href="#3-reduce-接受一个函数，返回一个值。-它会从一个累加值开始，不断对累加值和数组中的后续元素调用该函数，最后返回累加值。" class="headerlink" title="3.reduce() 接受一个函数，返回一个值。 它会从一个累加值开始，不断对累加值和数组中的后续元素调用该函数，最后返回累加值。"></a>3.reduce() 接受一个函数，返回一个值。 它会从一个累加值开始，不断对累加值和数组中的后续元素调用该函数，最后返回累加值。</h4><blockquote><p>也可以用来将数组中的元素连接成一个长字符串<br>reduceRight() 与 reduce()类似，是从右往左执行。</p></blockquote><h3 id="【2】-生成新数组的迭代器方法"><a href="#【2】-生成新数组的迭代器方法" class="headerlink" title="【2】 生成新数组的迭代器方法"></a>【2】 <code>生成新数组</code>的迭代器方法</h3><h4 id="1-map-和forEach-有点儿像，对数组中的每个元素使用某个函数。区别就是，map-返回一个新的数组，该数组的元素是对原有元素应用某个函数得到的结果。"><a href="#1-map-和forEach-有点儿像，对数组中的每个元素使用某个函数。区别就是，map-返回一个新的数组，该数组的元素是对原有元素应用某个函数得到的结果。" class="headerlink" title="1.map() 和forEach()有点儿像，对数组中的每个元素使用某个函数。区别就是，map()返回一个新的数组，该数组的元素是对原有元素应用某个函数得到的结果。"></a>1.map() 和forEach()有点儿像，对数组中的每个元素使用某个函数。区别就是，map()返回一个新的数组，该数组的元素是对原有元素应用某个函数得到的结果。</h4><figure class="highlight haxe"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">curve</span></span>(grade) {</span><br><span class="line"> retuan grade += <span class="number">5</span>;</span><br><span class="line">}</span><br><span class="line"><span class="keyword">var</span> grades = [<span class="number">77</span>, <span class="number">65</span>, <span class="number">81</span>, <span class="number">92</span>, <span class="number">83</span>];</span><br><span class="line"><span class="keyword">var</span> <span class="keyword">new</span><span class="type">grades</span> = grade.map(curve);</span><br><span class="line">print(<span class="keyword">new</span><span class="type">grades</span>);</span><br></pre></td></tr></table></figure><h4 id="2-filter-和every类似，传入一个返回值为布尔类型的函数。和every-和some-不同的是，当对数组中的所有元素应用该函数，返回结果均为true时，该方法并不返回true，而是返回一个新的数组，该数组只包含原数组元素应用该函数后返回结果为true的元素。"><a href="#2-filter-和every类似，传入一个返回值为布尔类型的函数。和every-和some-不同的是，当对数组中的所有元素应用该函数，返回结果均为true时，该方法并不返回true，而是返回一个新的数组，该数组只包含原数组元素应用该函数后返回结果为true的元素。" class="headerlink" title="2.filter() 和every类似，传入一个返回值为布尔类型的函数。和every()和some()不同的是，当对数组中的所有元素应用该函数，返回结果均为true时，该方法并不返回true，而是返回一个新的数组，该数组只包含原数组元素应用该函数后返回结果为true的元素。"></a>2.filter() 和every类似，传入一个返回值为布尔类型的函数。和every()和some()不同的是，当对数组中的所有元素应用该函数，返回结果均为true时，该方法并不返回true，而是返回一个新的数组，<code>该数组只包含原数组元素应用该函数后返回结果为true的元素。</code></h4><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">isEven</span><span class="params">(num)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> num % <span class="number">2</span> == <span class="number">0</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">isOdd</span><span class="params">(num)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> num % <span class="number">2</span> != <span class="number">0</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">var</span> nums = [];</span><br><span class="line"><span class="keyword">for</span> (<span class="keyword">var</span> i = <span class="number">0</span>; i < <span class="number">20</span>; ++i) {</span><br><span class="line"> nums[i] = i+<span class="number">1</span>;</span><br><span class="line">}</span><br><span class="line"><span class="keyword">var</span> evens = nums.filter(isEven);</span><br><span class="line"><span class="keyword">print</span>(<span class="string">"Even numbers: "</span>);</span><br><span class="line"><span class="keyword">print</span>(evens);</span><br><span class="line"><span class="keyword">var</span> odds = nums.filter(isOdd);</span><br><span class="line"><span class="keyword">print</span>(<span class="string">"Odd numbers: "</span>);</span><br><span class="line"><span class="keyword">print</span>(odds);</span><br></pre></td></tr></table></figure><!-- rebuild by neat -->]]></content>
<summary type="html">
<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h3 id="【1】-第一组迭代器方法不产生任何新数组，要么对于数组中的每个元素执行某种操作，要么返回一个值；"><a href="#【1】-第一组迭代器方法不产生任何新数组，要么对于数组中的每个元素执行某种操作，要么返回一个值；" class="headerlink" title="【1】 第一组迭代器方法不产生任何新数组，要么对于数组中的每个元素执行某种操作，要么返回一个值；"></a>【1】 第一组迭代器方法<code>不产生任何新数组</code>，要么对于数组中的每个元素执行某种操作，要么返回一个值；</h3><h4 id="1-forEach-接受一个函数作为参数，对数组中的每个元素使用该函数"><a href="#1-forEach-接受一个函数作为参数，对数组中的每个元素使用该函数" class="headerlink" title="1.forEach() 接受一个函数作为参数，对数组中的每个元素使用该函数"></a>1.forEach() 接受一个函数作为参数，对数组中的每个元素使用该函数</h4><figure class="highlight matlab"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">square</span><span class="params">(num)</span> &#123;</span></span><br><span class="line"> print(num, num * num);</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">var nums = [];</span><br><span class="line"><span class="keyword">for</span> (var <span class="built_in">i</span> = <span class="number">0</span>; <span class="built_in">i</span> &lt; <span class="number">10</span>; ++<span class="built_in">i</span>) &#123;</span><br><span class="line"> nums[<span class="built_in">i</span>] = <span class="built_in">i</span>+<span class="number">1</span>;</span><br><span class="line">&#125;</span><br><span class="line">nums.forEach(square);</span><br></pre></td></tr></table></figure>
</summary>
<category term="前端" scheme="http://algate.github.io/categories/%E5%89%8D%E7%AB%AF/"/>
<category term="JavaScript" scheme="http://algate.github.io/tags/JavaScript/"/>
<category term="数据结构与算法" scheme="http://algate.github.io/tags/%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84%E4%B8%8E%E7%AE%97%E6%B3%95/"/>
<category term="迭代器方法" scheme="http://algate.github.io/tags/%E8%BF%AD%E4%BB%A3%E5%99%A8%E6%96%B9%E6%B3%95/"/>
</entry>
<entry>
<title>我借用了别人的小程序</title>
<link href="http://algate.github.io/archives/JS191017.html"/>
<id>http://algate.github.io/archives/JS191017.html</id>
<published>2019-10-17T02:38:30.000Z</published>
<updated>2019-10-18T08:40:23.091Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><p>如何发布小程序？<br>我要开始写我自己的UniAppUI组件了。敬请期待……</p><!-- rebuild by neat -->]]></content>
<summary type="html">
<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><p>如何发布小程序？<br>我要开始写我自己的UniAppUI组件了。敬请期待……</p><!-- rebuild by neat -->
</summary>
<category term="前端" scheme="http://algate.github.io/categories/%E5%89%8D%E7%AB%AF/"/>
<category term="小程序" scheme="http://algate.github.io/tags/%E5%B0%8F%E7%A8%8B%E5%BA%8F/"/>
</entry>
<entry>
<title>微信公众号Django-内网穿透-服务器配置-python环境-token验证.md</title>
<link href="http://algate.github.io/archives/JS190831.html"/>
<id>http://algate.github.io/archives/JS190831.html</id>
<published>2019-08-31T04:44:30.000Z</published>
<updated>2019-08-31T08:49:38.408Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><blockquote><blockquote><blockquote><p>说明: 微信公众号文档，以及python，好友后续的内容涉及的相关知识，都在python2.7版本下进行的测试验证<br>python3.0+版本出现各种问题，so，以下内容都在python2.7的环境下有效,先安装python2.7</p></blockquote></blockquote></blockquote><h2 id="1-微信公众号开发者文档服务器配置"><a href="#1-微信公众号开发者文档服务器配置" class="headerlink" title="1.微信公众号开发者文档服务器配置"></a>1.微信公众号开发者文档服务器配置</h2><h3 id="1-1-搭建服务-Python-Web服务"><a href="#1-1-搭建服务-Python-Web服务" class="headerlink" title="1-1.搭建服务(Python Web服务)"></a>1-1.搭建服务(Python Web服务)</h3><p><a href="https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1472017492_58YV5" target="_blank" rel="noopener">开发者文档</a><br>这里就用Django搭建服务了，方便省事(不用自己写代码了)</p><h2 id="2-搭建Django-Python-Web-框架"><a href="#2-搭建Django-Python-Web-框架" class="headerlink" title="2.搭建Django(Python Web 框架)"></a>2.搭建Django(Python Web 框架)</h2><h3 id="2-1-安装Django"><a href="#2-1-安装Django" class="headerlink" title="2.1 安装Django"></a>2.1 安装Django</h3><p><a href="https://docs.djangoproject.com/zh-hans/2.1/topics/" target="_blank" rel="noopener">Django官方</a><br>直接看 如何在Windows上安装Django？</p><p>[1]<code>pip install Django</code>(推荐 pip为python的安装工具也可以使用easy_install django来进行安装)</p><h3 id="2-2-创建your-first-Django-app"><a href="#2-2-创建your-first-Django-app" class="headerlink" title="2.2 创建your first Django app"></a>2.2 创建your first Django app</h3><p><a href="https://docs.djangoproject.com/en/2.2/intro/tutorial01/" target="_blank" rel="noopener">https://docs.djangoproject.com/en/2.2/intro/tutorial01/</a></p><p><code>django-admin startproject mysite</code> mysite为你要创建的web站文件夹 我的为 DjangoWechat<br>创建完之后，文件夹下会有一个文件夹，cd之后，里边还有个一相同的文件夹名</p><pre><code>mysite/manage.pymysite/ __init__.py settings.py urls.py wsgi.py</code></pre><h3 id="2-3-启动服务"><a href="#2-3-启动服务" class="headerlink" title="2.3 启动服务"></a>2.3 启动服务</h3><p><code>py manage.py runserver 8080</code><br>打开浏览器就可以看到成功的默认页面</p><h3 id="2-4-部署自己的app项目"><a href="#2-4-部署自己的app项目" class="headerlink" title="2.4 部署自己的app项目"></a>2.4 部署自己的app项目</h3><p>首先创建一个存放你项目的app<br><code>python manage.py startapp polls</code> 我的是wechat</p><pre><code>polls/__init__.pyadmin.pyapps.pymigrations/ __init__.pymodels.pytests.pyviews.py</code></pre><blockquote><blockquote><p>Django默认是吧页面放到templates下的，资源是放在static下的<br>一般打包的项目index.html加一个static文件夹，<br>so 复制你的项目到polls下，把index.html放到templates下即可，不需要修改你项目里的路径</p></blockquote></blockquote><h3 id="2-5-访问服务下的index-html"><a href="#2-5-访问服务下的index-html" class="headerlink" title="2.5 访问服务下的index.html"></a>2.5 访问服务下的index.html</h3><p>2.5.1 修改Djangon项目下urls.py</p><pre><code># 导入appfrom polls(wechat) import views# addurl(r'^$', views.home, name='home'),</code></pre><p>2.5.2 修改polls(wechat)下views.py</p><pre><code># from django.shortcuts import renderfrom django.shortcuts import render, render_to_response, HttpResponsedef home(request):return render_to_response('index.html')</code></pre><p>现在应该可以看到index.html效果展示了</p><h2 id="3-微信服务器配置token验证"><a href="#3-微信服务器配置token验证" class="headerlink" title="3.微信服务器配置token验证"></a>3.微信服务器配置token验证</h2><h3 id="3-1-公众号登录-基础配置-服务器配置"><a href="#3-1-公众号登录-基础配置-服务器配置" class="headerlink" title="3.1 公众号登录 - 基础配置 - 服务器配置"></a>3.1 公众号登录 - 基础配置 - 服务器配置</h3><p>服务器地址(URL) ： http://此处可以通过内网穿透来实现自己的域名/weixin/(weixin这个自己定义，需要和Django下的定义的接口一致就行)<br>令牌(Token)：设置自己的我是起的项目名CloudUI<br>消息加解密密钥(EncodingAESKey)：点击按钮自动生成</p><h3 id="3-2-点击提交，你会发现报错"><a href="#3-2-点击提交，你会发现报错" class="headerlink" title="3.2 点击提交，你会发现报错"></a>3.2 点击提交，你会发现报错</h3><p>token验证失败 - 只是最多的提示，就是微信发送请求，没哟得到正确的结果<br>请求超时，说明服务没起</p><h2 id="4-Django服务添加验证接口"><a href="#4-Django服务添加验证接口" class="headerlink" title="4.Django服务添加验证接口"></a>4.Django服务添加验证接口</h2><h3 id="4-1-修改Django项目下的urls-py"><a href="#4-1-修改Django项目下的urls-py" class="headerlink" title="4.1 修改Django项目下的urls.py"></a>4.1 修改Django项目下的urls.py</h3><p>4.1.1修改Djangon项目下urls.py</p><pre><code># 添加接口(views为之前修改首页导入的app的入口模块，wechat为定义的app下的访问的模块方法)url(r'weixin/.*', views.wechat),</code></pre><p>4.1.2 修改polls(wechat)下views.py</p><pre><code># add wechat-tokenfrom django.views.decorators.csrf import csrf_exempt # 解除csrf验证from wechat_sdk import WechatConffrom wechat_sdk import WechatBasic## add wechat-tokenconf = WechatConf( # 实例化配置信息对象 token='', # 服务器配置-Token appid='', # 公众号开发信息-开发者ID appsecret='', # 公众号开发信息-开发者密码 encrypt_mode='normal', # 服务器配置-明文模式 encoding_aes_key='' # 服务器配置-EncodingAESKey)@csrf_exempt # 去除csrf验证def wechat(request): signature = request.GET.get('signature') # 获取请求信息 timestamp = request.GET.get('timestamp') nonce = request.GET.get('nonce') wechat_instance = WechatBasic(conf=conf) # 实例化微信基类对象 if not wechat_instance.check_signature(signature=signature, timestamp=timestamp, nonce=nonce): # 检查验证请求的签名 return HttpResponseBadRequest('Verify Failed') else: if request.method == 'GET': return HttpResponse(request.GET.get('echostr', None)) # 返回请求中的回复信息</code></pre><h3 id="4-2-安装wechat-sdk"><a href="#4-2-安装wechat-sdk" class="headerlink" title="4.2 安装wechat-sdk"></a>4.2 安装wechat-sdk</h3><p><code>pip install wechat-sdk</code></p><p>此处服务如果报错 |_</p><h3 id="4-3-Unable-to-find-vcvarsall-bat"><a href="#4-3-Unable-to-find-vcvarsall-bat" class="headerlink" title="4.3 Unable to find vcvarsall.bat"></a>4.3 Unable to find vcvarsall.bat</h3><p>(有可能是找不到模块导致的)<br>(安装python的时候可能报错 - 此处如果报错跟这个可能关系不大 - 往上翻)报错往上翻，不是文档往上翻<br><a href="https://www.cnblogs.com/yyds/p/7065637.html" target="_blank" rel="noopener">Unable to find vcvarsall.bat</a></p><h3 id="4-4-安装Crypto"><a href="#4-4-安装Crypto" class="headerlink" title="4.4 安装Crypto"></a>4.4 安装Crypto</h3><p>官方验证有个Python实例(用于验证的)：</p><pre><code>目录: E:\JavascriptCode\webPy\微信公众号\SampleCode\PythonMode LastWriteTime Length Name---- ------------- ------ -----a---- 2017/7/27 20:40 795 ierror.py-a---- 2017/7/27 20:40 2372 Sample.py-a---- 2017/7/27 20:40 9400 WXBizMsgCrypt.py-a---- 2017/7/27 20:40 0 __init__.py</code></pre><p>如果用到WXBizMsgCrypt.py，在windows会报错<br><code>from Crypto.Cipher import AES</code> ImportError: No module named ‘Crypto’</p><p>可以直接<code>pip install Crypto</code> 如果成功，直接看第五步，如果不成功就接着看。</p><p>里边有这么一段：<br>“””<br>关于Crypto.Cipher模块，ImportError: No module named ‘Crypto’解决方案<br>请到官方网站 <a href="https://www.dlitz.net/software/pycrypto/" target="_blank" rel="noopener">https://www.dlitz.net/software/pycrypto/</a> 下载pycrypto。<br>下载后，按照README中的“Installation”小节的提示进行pycrypto安装。<br>“””</p><p>下载pycrypto-2.6.1.tar.gz文件<br>接4.4</p><h3 id="4-5-解压pycrypto下找到readme文件的Installation"><a href="#4-5-解压pycrypto下找到readme文件的Installation" class="headerlink" title="4.5 解压pycrypto下找到readme文件的Installation"></a>4.5 解压pycrypto下找到readme文件的Installation</h3><p>执行 <code>python setup.py install</code></p><p>会发现报错<code>Unable to find vcvarsall.bat</code></p><p>(此处关系不大，否则python安装会提示)先验证vb，vc是否安装？<a href="https://www.cnblogs.com/yyds/p/7065637.html" target="_blank" rel="noopener">Unable to find vcvarsall.bat</a></p><p>如果还是报错</p><p>Python安装目录\Lib\site-packages下是否有Crypto<br>如果有，保证首字母大写<br>如果没有，copy一份放进去。重新执行 py setup.py install（pip install Crypto）即可，只要最后出现successing的字样就表示你成功了！</p><h2 id="5-内网穿透"><a href="#5-内网穿透" class="headerlink" title="5.内网穿透"></a>5.内网穿透</h2><h3 id="5-1-网上随便找一个就ok，只要能外网访问到项目就ok"><a href="#5-1-网上随便找一个就ok，只要能外网访问到项目就ok" class="headerlink" title="5.1 网上随便找一个就ok，只要能外网访问到项目就ok"></a>5.1 网上随便找一个就ok，只要能外网访问到项目就ok</h3><p>Django 与 设置的外网访问的 端口号要保持一致</p><p>127.0.0.1带上微信请求的接口自己本地先测试下。是否ok，欧克的话就可以公众号验证token了。<br>此处需要把127.0.0.1 /内网穿透的域名 配置到Django环境下settings.py的<code>ALLOWED_HOSTS = []</code>里</p><p>如果不成功那就看看报错出在哪里。慢慢解决</p><p>此处的域名访问填写到微信公众号的服务器配置里<br>分别填写token，密钥<br>然后提交，就会发现token验证成功了，如果报错，请上翻查找原因</p><!-- rebuild by neat -->]]></content>
<summary type="html">
<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><blockquote><blockquote><blockquote><p>说明: 微信公众号文档，以及python，好友后续的内容涉及的相关知识，
</summary>
<category term="前端" scheme="http://algate.github.io/categories/%E5%89%8D%E7%AB%AF/"/>
<category term="微信公众号" scheme="http://algate.github.io/tags/%E5%BE%AE%E4%BF%A1%E5%85%AC%E4%BC%97%E5%8F%B7/"/>
</entry>
<entry>
<title>内网穿透工具</title>
<link href="http://algate.github.io/archives/JS190829.html"/>
<id>http://algate.github.io/archives/JS190829.html</id>
<published>2019-08-29T03:20:30.000Z</published>
<updated>2019-12-25T06:31:34.383Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h2 id="1-内网穿透工具"><a href="#1-内网穿透工具" class="headerlink" title="1.内网穿透工具"></a>1.内网穿透工具</h2><h3 id="1-1-ngrok"><a href="#1-1-ngrok" class="headerlink" title="1-1.ngrok"></a>1-1.ngrok</h3><h3 id="1-2-Natapp"><a href="#1-2-Natapp" class="headerlink" title="1-2.Natapp"></a>1-2.Natapp</h3><h3 id="1-3-localtunnel"><a href="#1-3-localtunnel" class="headerlink" title="1-3.localtunnel"></a>1-3.localtunnel</h3><p>安装localtunnel<br><code>npm install -g localtunnel</code><br>开启localtunnel服务</p><p>1）指定的端口号 –port 8000 必须与 localhost的8000相对应<br>2）–subdomain mitu : 指定前缀为 mitu<br>3） lt 为localtunnel 缩写4. 最后, 在外网浏览器输入 <a href="https://mitu.localtunnel.me" target="_blank" rel="noopener">https://mitu.localtunnel.me</a> 即可访问本地的localhost:8000， 需要注意的是，localtunnel的服务器是国外，有时候访问可能不太理想</p><h3 id="1-4-uTools"><a href="#1-4-uTools" class="headerlink" title="1-4.uTools:"></a>1-4.uTools:</h3><h3 id="1-5-open-dingtalk-pierced"><a href="#1-5-open-dingtalk-pierced" class="headerlink" title="1-5.open-dingtalk/pierced"></a>1-5.open-dingtalk/pierced</h3><p><a href="https://github.com/open-dingtalk/pierced" target="_blank" rel="noopener">地址</a><br>cmd下运行命令</p><p><a href="http://u.tools/" target="_blank" rel="noopener">http://u.tools/</a></p><p>其他<a href="https://www.jianshu.com/p/cdc446e51675" target="_blank" rel="noopener">参考地址</a><br>前5个都是基于国外的ngrok来进行二次开发的。</p><p>1、Ngrok</p><p>ngrok 是一个反向代理，通过在公共端点和本地运行的 Web 服务器之间建立一个安全的通道，实现内网主机的服务可以暴露给外网。ngrok 可捕获和分析所有通道上的流量，便于后期分析和重放，所以ngrok可以很方便地协助服务端程序测试。</p><p>参考博客：10分钟教你搭建自己的ngrok服务器</p><p>2、Natapp</p><p>natapp是 基于ngrok的国内收费内网穿透工具，类似花生壳，有免费版本，比花生壳好。免费版本：提供http,https,tcp全隧道穿透，随机域名/TCP端口，不定时强制更换域名/端口，自定义本地端口</p><p>参考文章：NATAPP1分钟快速新手图文教程</p><p>3、小米球</p><p>小米球是基于ngrok二次开发的内网穿透工具，支持多协议、多隧道、多端口同时映射(http、https、tcp等等…)，同时支持多种系统win、linux、linux_arm、mac等。具体的使用直接参考官网。</p><p>4、Sunny-Ngrok</p><p>Sunny-Ngrok同样是ngrok二次开发的内网穿透工具，支持http,https协议，同时支持更丰富的系统和语言：linux、win、mac、openwrt、 python、php等。</p><p>教程：Sunny-Ngrok使用教程</p><p>5、echosite</p><p>echosite同样ngrok二次开发的内网穿透工具，支持多种协议，以前是全部免费的，现在推出了收费版和免费版，可根据自己的需要去选择。</p><p>参考教程：EchoSite—让内网穿透变得简单</p><p>6、Ssh、autossh</p><p>ssh 配合autossh工具使用，因为autossh会容错，自动重新启动SSH会话和隧道。autossh是一个程序，用于启动ssh的副本并进行监控，在死亡或停止传输流量时根据需要重新启动它。 这个想法来自rstunnel（Reliable SSH Tunnel），但是在C中实现。作者的观点是，它不像匆匆忙忙的工作那么容易。使用端口转发环路或远程回显服务进行连接监视。在遇到连接拒绝等快速故障时，关闭连接尝试的速度。在OpenBSD，Linux，Solaris，Mac OS X，Cygwin和AIX上编译和测试; 应该在其他BSD上工作。免费软件。</p><p>使用教程：SSH内网穿透</p><p>7、Lanproxy</p><p>lanproxy是一个将局域网个人电脑、服务器代理到公网的内网穿透工具，目前仅支持tcp流量转发，可支持任何tcp上层协议（访问内网网站、本地支付接口调试、ssh访问、远程桌面…）。目前市面上提供类似服务的有花生壳、TeamView、GoToMyCloud等等，但要使用第三方的公网服务器就必须为第三方付费，并且这些服务都有各种各样的限制，此外，由于数据包会流经第三方，因此对数据安全也是一大隐患。</p><p>参考教程：业余草推荐一款局域网（内网）穿透工具lanproxy</p><p>8、Spike</p><p>Spike是一个可以用来将你的内网服务暴露在公网的快速的反向代理，基于ReactPHP，采用IO多路复用模型。采用Php实现。</p><p>参考教程：使用 PHP 实现的的内网穿透工具 “Spike”</p><p>9、Frp</p><p>frp 是一个可用于内网穿透的高性能的反向代理应用，支持 tcp, udp, http, https 协议。利用处于内网或防火墙后的机器，对外网环境提供 http 或 https 服务。对于 http, https 服务支持基于域名的虚拟主机，支持自定义域名绑定，使多个域名可以共用一个80端口。利用处于内网或防火墙后的机器，对外网环境提供 tcp 和 udp 服务，例如在家里通过 ssh 访问处于公司内网环境内的主机。</p><p>教程：一款很好用的内网穿透工具–FRP、使用frp实现内网穿透</p><p>10、Fcn</p><p>FCN[free connect]是一款傻瓜式的一键接入私有网络的工具, fcn利用公共服务器以及数据加密技术实现：在免公网IP环境下，在任意联网机器上透明接入服务端所在局域网网段。支持多种系统，有免费版和付费版</p><!-- rebuild by neat -->]]></content>
<summary type="html">
<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h2 id="1-内网穿透工具"><a href="#1-内网穿透工具" class="headerlink" title="1.内网穿透工具"><
</summary>
<category term="工具" scheme="http://algate.github.io/categories/%E5%B7%A5%E5%85%B7/"/>
<category term="前端工具" scheme="http://algate.github.io/tags/%E5%89%8D%E7%AB%AF%E5%B7%A5%E5%85%B7/"/>
</entry>
<entry>
<title>JavaScript好用的Web-Api</title>
<link href="http://algate.github.io/archives/JS190826.html"/>
<id>http://algate.github.io/archives/JS190826.html</id>
<published>2019-08-26T02:57:30.000Z</published>
<updated>2019-09-06T03:50:29.600Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h3 id="1-closest（元素向上查询）"><a href="#1-closest（元素向上查询）" class="headerlink" title="1.closest（元素向上查询）"></a>1.closest（元素向上查询）</h3><ul><li>closest<br>跟querySelector相反，该元素可以向上查询，也就是可以查询到父元素：<br>document.querySelector(“li”).closest(“#nav”);</li></ul><h3 id="2-dataset（获取元素以”data-“为前缀的属性集合）"><a href="#2-dataset（获取元素以”data-“为前缀的属性集合）" class="headerlink" title="2.dataset（获取元素以”data-“为前缀的属性集合）"></a>2.dataset（获取元素以”data-“为前缀的属性集合）</h3><ul><li>dataset<br>就跟原生微信小程序一样，能获取标签上以”data-“为前缀的属性集合：</li></ul><p></p><p data-name="蜘蛛侠" data-age="16"></p><br>document.querySelector(“p”).dataset; // {name: “蜘蛛侠”, age: “16”}<br>注意：虽然可以用getAttribute方法获取任何属性值，但是性质却不一样，这是开发规范问题，凡是自定义属性都要加上data-前缀哦<p></p><h3 id="3-URLSearchParams（查询参数）"><a href="#3-URLSearchParams（查询参数）" class="headerlink" title="3.URLSearchParams（查询参数）"></a>3.URLSearchParams（查询参数）</h3><ul><li>URLSearchParams<br>假设浏览器的url参数是 “?name=蜘蛛侠&age=16”：</li></ul><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">new</span> URLSearchParams(location.search).get(<span class="string">"name"</span>); <span class="comment">// 蜘蛛侠</span></span><br></pre></td></tr></table></figure><h3 id="4-hidden（隐藏元素）"><a href="#4-hidden（隐藏元素）" class="headerlink" title="4.hidden（隐藏元素）"></a>4.hidden（隐藏元素）</h3><p>这是一个html属性，规定元素是否隐藏，表现跟css的display: none一致：<br><code><div hidden>我被隐藏了</div></code><br><code>document.querySelector("div").hidden = true / false;</code></p><h3 id="5-classList（类名控制器）"><a href="#5-classList（类名控制器）" class="headerlink" title="5.classList（类名控制器）"></a>5.classList（类名控制器）</h3><ul><li>classList<br>这是一个对象，该对象里封装了许多操作元素类名的方法：<br><code><p class="title"></p></code><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">let</span> elem = <span class="built_in">document</span>.querySelector(<span class="string">"p"</span>);</span><br><span class="line"><span class="comment">// 增加类名</span></span><br><span class="line">elem.classList.add(<span class="string">"title-new"</span>); <span class="comment">// "title title-new"</span></span><br><span class="line"><span class="comment">// 删除类名</span></span><br><span class="line">elem.classList.remove(<span class="string">"title"</span>); <span class="comment">// "title-new"</span></span><br><span class="line"><span class="comment">// 切换类名（有则删、无则增，常用于一些切换操作，如显示/隐藏）</span></span><br><span class="line">elem.classList.toggle(<span class="string">"title"</span>); <span class="comment">// "title-new title"</span></span><br><span class="line"><span class="comment">// 替换类名</span></span><br><span class="line">elem.classList.replace(<span class="string">"title"</span>, <span class="string">"title-old"</span>); <span class="comment">// "title-new title-old"</span></span><br><span class="line"><span class="comment">// 是否包含指定类名</span></span><br><span class="line">elem.classList.contains(<span class="string">"title"</span>); <span class="comment">// false</span></span><br></pre></td></tr></table></figure></li></ul><h3 id="6-contains（判断是否包含指定元素）"><a href="#6-contains（判断是否包含指定元素）" class="headerlink" title="6.contains（判断是否包含指定元素）"></a>6.contains（判断是否包含指定元素）</h3><ul><li>contains<br>可以判断指定元素是否包含了指定的子元素：<figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="name">div</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">p</span>></span><span class="tag"></<span class="name">p</span>></span></span><br><span class="line"><span class="tag"></<span class="name">div</span>></span></span><br><span class="line">document.querySelector("div").contains(document.querySelector("p")); // true</span><br></pre></td></tr></table></figure></li></ul><h3 id="7-online-state（网络状态）"><a href="#7-online-state（网络状态）" class="headerlink" title="7.online state（网络状态）"></a>7.online state（网络状态）</h3><ul><li>online state<br>监听当前的网络状态变动，然后执行对应的方法：<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="built_in">window</span>.addEventListener(<span class="string">"online"</span>, xxx);</span><br><span class="line"></span><br><span class="line"><span class="built_in">window</span>.addEventListener(<span class="string">"offline"</span>, () => {</span><br><span class="line"> alert(<span class="string">"你断网啦！"</span>);</span><br><span class="line">});</span><br></pre></td></tr></table></figure></li></ul><p>使用场景：提示用户已断网，直接一个弹框把用户吓懵</p><h3 id="8-battery-state（电池状态）"><a href="#8-battery-state（电池状态）" class="headerlink" title="8.battery state（电池状态）"></a>8.battery state（电池状态）</h3><ul><li>battery state<br>获取设备的电池状态：<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line">navigator.getBattery().then(<span class="function"><span class="params">battery</span> =></span> <span class="built_in">console</span>.log(battery));</span><br><span class="line"><span class="comment">// 返回</span></span><br><span class="line">{</span><br><span class="line"> charging, <span class="comment">// 是否在充电</span></span><br><span class="line"> chargingTime, <span class="comment">// 充满电所需时间</span></span><br><span class="line"> dischargingTime, <span class="comment">// 当前电量可使用时间</span></span><br><span class="line"> level, 剩余电量</span><br><span class="line"></span><br><span class="line"> onchargingchange, <span class="comment">// 监听充电状态变化</span></span><br><span class="line"> onchargingtimechange, <span class="comment">// 监听充满电所需时间变化</span></span><br><span class="line"> ondischargingtimechange, <span class="comment">// 监听当前电量可使用时间变化</span></span><br><span class="line"> onlevelchange <span class="comment">// 监听电量变化</span></span><br><span class="line">}</span><br></pre></td></tr></table></figure></li></ul><p>使用场景：提示用户电量已充满，或者为了让用户有安全感，电量低于99%的时候来个弹框提示”该充电啦”</p><h3 id="9-vibration（设备震动）"><a href="#9-vibration（设备震动）" class="headerlink" title="9.vibration（设备震动）"></a>9.vibration（设备震动）</h3><p>嘻嘻，使设备进行震动：<br>// 震动一次<br>navigator.vibrate(100);<br>// 连续震动，震动200ms、暂停100ms、震动300ms<br>navigator.vibrate([200, 100, 300]);<br>效果如下：不好意思你得用你自己的手握住手机才能感受得到;<br>使用场景：通过振动来提供感官反馈，比如太久没有触摸屏幕的时候连续震动提醒用户</p><h3 id="10-page-visibility（页面可见性）"><a href="#10-page-visibility（页面可见性）" class="headerlink" title="10.page visibility（页面可见性）"></a>10.page visibility（页面可见性）</h3><p>顾名思义，这个API是用来监听页面可见性变化的，在PC端标签栏切换、最小化会触发、在移动端程序切到后台会触发，简单说就是页面消失了🤦♂️<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="built_in">document</span>.addEventListener(<span class="string">"visibilitychange"</span>, () => {</span><br><span class="line"> <span class="built_in">console</span>.log(<span class="string">`页面可见性：<span class="subst">${<span class="built_in">document</span>.visibilityState}</span>`</span>);</span><br><span class="line">});</span><br></pre></td></tr></table></figure><p></p><p>PC端效果如下：<br><img src="/images/js_webapi_visibility.gif" alt="image"><br>移动端效果如下：<br><img src="/images/js_webapi_visibility_app.gif" alt="image"><br>使用场景：当程序切到后台的时候，如果当前有视频播放或者一些动画执行，可以先暂停</p><h3 id="11-deviceOrientation（陀螺仪）"><a href="#11-deviceOrientation（陀螺仪）" class="headerlink" title="11.deviceOrientation（陀螺仪）"></a>11.deviceOrientation（陀螺仪）</h3><ul><li>deviceOrientation<br>陀螺仪，也就是设备的方向，又名重力感应，该API在IOS设备上失效的解决办法，将域名协议改成https；<br><img src="/images/js_webapi_deviceOrientation.jpg" alt="image"><br>从左到右分别为alpha、beta、gamma:<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="built_in">window</span>.addEventListener(<span class="string">"deviceorientation"</span>, event => {</span><br><span class="line"> <span class="keyword">let</span> {</span><br><span class="line"> alpha,</span><br><span class="line"> beta,</span><br><span class="line"> gamma</span><br><span class="line"> } = event;</span><br><span class="line"></span><br><span class="line"> <span class="built_in">console</span>.log(<span class="string">`alpha：<span class="subst">${alpha}</span>`</span>);</span><br><span class="line"> <span class="built_in">console</span>.log(<span class="string">`beta：<span class="subst">${beta}</span>`</span>);</span><br><span class="line"> <span class="built_in">console</span>.log(<span class="string">`gamma：<span class="subst">${gamma}</span>`</span>);</span><br><span class="line">});</span><br></pre></td></tr></table></figure></li></ul><p>使用场景：页面上的某些元素需要根据手机摆动进行移动，达到视差的效果，比如王者荣耀进入游戏的那个界面，手机转动背景图会跟着动</p><h3 id="12-toDataUrl（画布内容转base64）"><a href="#12-toDataUrl（画布内容转base64）" class="headerlink" title="12.toDataUrl（画布内容转base64）"></a>12.toDataUrl（画布内容转base64）</h3><ul><li>toDataURL<br>这个canvas的API，作用是将画布的内容转换成一个base64的图片地址：<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">let</span> canvas = <span class="built_in">document</span>.querySelector(<span class="string">"canvas"</span>);</span><br><span class="line"><span class="keyword">let</span> context = canvas.getContext(<span class="string">"2d"</span>);</span><br><span class="line"><span class="comment">//……</span></span><br><span class="line"><span class="keyword">let</span> url = canvas.toDataURL(<span class="string">"image/png"</span>); <span class="comment">// 将画布内容转换成base64地址</span></span><br></pre></td></tr></table></figure></li></ul><p>使用a标签进行图片下载时，图片链接跨域（图片是我的掘金头像），无法进行下载而是进行图片预览：<br></p><figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="name">img</span> <span class="attr">src</span>=<span class="string">"xxx"</span>></span></span><br><span class="line"><span class="tag"><<span class="name">button</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">a</span> <span class="attr">href</span>=<span class="string">"xxx"</span> <span class="attr">download</span>=<span class="string">"avatar"</span>></span>下载图片<span class="tag"></<span class="name">a</span>></span></span><br><span class="line"><span class="tag"></<span class="name">button</span>></span></span><br></pre></td></tr></table></figure><p></p><p>封装以下代码便可解决✅<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> downloadImage = <span class="function">(<span class="params">url, name</span>) =></span> {</span><br><span class="line"> <span class="comment">// 实例化画布</span></span><br><span class="line"> <span class="keyword">let</span> canvas = <span class="built_in">document</span>.createElement(<span class="string">"canvas"</span>);</span><br><span class="line"> <span class="keyword">let</span> context = canvas.getContext(<span class="string">"2d"</span>);</span><br><span class="line"> <span class="comment">// 实例化一个图片对象</span></span><br><span class="line"> <span class="keyword">let</span> image = <span class="keyword">new</span> Image();</span><br><span class="line"> image.crossOrigin = <span class="string">"Anonymous"</span>;</span><br><span class="line"> image.src = url;</span><br><span class="line"> <span class="comment">// 当图片加载完毕</span></span><br><span class="line"> image.onload = <span class="function"><span class="params">()</span> =></span> {</span><br><span class="line"> <span class="comment">// 将图片画在画布上</span></span><br><span class="line"> canvas.height = image.height;</span><br><span class="line"> canvas.width = image.width;</span><br><span class="line"> context.drawImage(image, <span class="number">0</span>, <span class="number">0</span>);</span><br><span class="line"> <span class="comment">// 将画布的内容转换成base64地址</span></span><br><span class="line"> <span class="keyword">let</span> dataURL = canvas.toDataURL(<span class="string">"image/png"</span>);</span><br><span class="line"> <span class="comment">// 创建a标签模拟点击进行下载</span></span><br><span class="line"> <span class="keyword">let</span> a = <span class="built_in">document</span>.createElement(<span class="string">"a"</span>);</span><br><span class="line"> a.hidden = <span class="literal">true</span>;</span><br><span class="line"> a.href = dataURL;</span><br><span class="line"> a.download = name;</span><br><span class="line"> <span class="built_in">document</span>.body.appendChild(a);</span><br><span class="line"> a.click();</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p></p><p>或者将当前的DOM转换成图片进行下载，常用于生成海报，推荐插件html2canvas，大家可以自己去搜;</p><h3 id="13-customEvent（自定义事件）"><a href="#13-customEvent（自定义事件）" class="headerlink" title="13.customEvent（自定义事件）"></a>13.customEvent（自定义事件）</h3><ul><li>customEvent<br>自定义事件，就跟vue里面的on跟emit一样；</li></ul><p>监听自定义事件：<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="built_in">window</span>.addEventListener(<span class="string">"follow"</span>, event => {</span><br><span class="line"> <span class="built_in">console</span>.log(event.detail); <span class="comment">// 输出 {name: "前端宇宙情报局"}</span></span><br><span class="line">});</span><br><span class="line">派发自定义事件：</span><br><span class="line"><span class="built_in">window</span>.dispatchEvent(<span class="keyword">new</span> CustomEvent(<span class="string">"follow"</span>, {</span><br><span class="line"> detail: {</span><br><span class="line"> name: <span class="string">"前端宇宙情报局"</span></span><br><span class="line"> }</span><br><span class="line">}));</span><br></pre></td></tr></table></figure><p></p><h3 id="14-notification（桌面通知）"><a href="#14-notification（桌面通知）" class="headerlink" title="14.notification（桌面通知）"></a>14.notification（桌面通知）</h3><ul><li>notification<br>PC端的桌面通知，如网页端的微信，当收到消息时，右下角会出现一个通知（尽管你把浏览器最小化），因为这个通知时独立于浏览器的，是系统的一个原生控件：<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> notice = <span class="keyword">new</span> Notification(<span class="string">"前端宇宙情报局"</span>, {</span><br><span class="line"> body: <span class="string">"这20个不常用的Web API真的有用吗?，别问，问就是有用🈶"</span>,</span><br><span class="line"> icon: <span class="string">"我的掘金头像"</span>,</span><br><span class="line"> data: {</span><br><span class="line"> url: <span class="string">"https://www.baidu.com"</span></span><br><span class="line"> }</span><br><span class="line">});</span><br><span class="line"><span class="comment">// 点击回调</span></span><br><span class="line">notice.onclick = <span class="function"><span class="params">()</span> =></span> {</span><br><span class="line"> <span class="built_in">window</span>.open(notice.data.url); <span class="comment">// 当用户点击通知时，在浏览器打开百度网站</span></span><br><span class="line">}</span><br></pre></td></tr></table></figure></li></ul><p>效果如下：<br><img src="/images/js_webapi_notification.gif" alt="image"></p><p>注意：想要成功的调起通知，首先要用户的授权✅</p><p>Notification.requestPermission(prem => {<br>prem == “granted” // 同意<br>prem == “denied” // 拒绝<br>})<br>所以，再调用之前先向用户发起请求：<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">let</span> permission = Notification.permission;</span><br><span class="line"><span class="keyword">if</span> (permission == <span class="string">"granted"</span>) {</span><br><span class="line"> <span class="comment">// 已同意，开始发送通知</span></span><br><span class="line"> ...</span><br><span class="line">} <span class="keyword">else</span> <span class="keyword">if</span> (permission == <span class="string">"denied"</span>) {</span><br><span class="line"> <span class="comment">// 不同意，发不了咯</span></span><br><span class="line">} <span class="keyword">else</span> {</span><br><span class="line"> <span class="comment">// 其他状态，可以重新发送授权提示</span></span><br><span class="line"> Notification.requestPermission();</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p></p><h3 id="15-fullScreen（全屏）"><a href="#15-fullScreen（全屏）" class="headerlink" title="15.fullScreen（全屏）"></a>15.fullScreen（全屏）</h3><ul><li>fullScreen<br>全屏不咯? 之前的一个项目刚好用上，不仅仅可以作用在documentElement上，还可以作用在指定元素：<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * @method launchFullScreen 开启全屏</span></span><br><span class="line"><span class="comment"> * @param {Object} elem = document.documentElement 作用的元素</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">const</span> launchFullScreen = <span class="function">(<span class="params">elem = <span class="built_in">document</span>.documentElement</span>) =></span> {</span><br><span class="line"> <span class="keyword">if</span>(elem.requestFullScreen) {</span><br><span class="line"> elem.requestFullScreen();</span><br><span class="line"> } <span class="keyword">else</span> <span class="keyword">if</span>(elem.mozRequestFullScreen) {</span><br><span class="line"> elem.mozRequestFullScreen();</span><br><span class="line"> } <span class="keyword">else</span> <span class="keyword">if</span>(elem.webkitRequestFullScreen) {</span><br><span class="line"> elem.webkitRequestFullScreen();</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure></li></ul><p>作用在documentElement上没啥可以介绍的咯，就相当于F11开启全屏：<br>那么作用在指定元素会是什么效果呢?<br><img src="/images/js_webapi_fullScreen.gif" alt="image"><br>就像效果图一样，会直接开启全屏，并且只显示指定的元素，元素的宽高填充了整个屏幕✅<br>关闭全屏的时候需要注意的是，统一用document对象：<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * @method exitFullScreen 关闭全屏</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">const</span> exitFullScreen = <span class="function"><span class="params">()</span> =></span> {</span><br><span class="line"> <span class="keyword">if</span> (<span class="built_in">document</span>.exitFullscreen) {</span><br><span class="line"> <span class="built_in">document</span>.exitFullscreen();</span><br><span class="line"> } <span class="keyword">else</span> <span class="keyword">if</span> (<span class="built_in">document</span>.mozCancelFullScreen) {</span><br><span class="line"> <span class="built_in">document</span>.mozCancelFullScreen();</span><br><span class="line"> } <span class="keyword">else</span> <span class="keyword">if</span> (<span class="built_in">document</span>.webkitCancelFullScreen) {</span><br><span class="line"> <span class="built_in">document</span>.webkitCancelFullScreen();</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p></p><p>使用场景：需要让用户专注去做某件事，比如代码编辑区的全屏</p><h3 id="16-orientation（屏幕方向）"><a href="#16-orientation（屏幕方向）" class="headerlink" title="16.orientation（屏幕方向）"></a>16.orientation（屏幕方向）</h3><ul><li>orientation<br>可以监听用户手机设备的旋转方向变化：<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="built_in">window</span>.addEventListener(<span class="string">"orientationchange"</span>, () => {</span><br><span class="line"> <span class="built_in">document</span>.body.innerHTML += <span class="string">`<p>屏幕旋转后的角度值：<span class="subst">${<span class="built_in">window</span>.orientation}</span></p>`</span>;</span><br><span class="line">}, <span class="literal">false</span>);</span><br></pre></td></tr></table></figure></li></ul><p>效果如下：<br><img src="/images/js_webapi_orientation.gif" alt="image"><br>也可以使用css的媒体查询：<br></p><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">/* 竖屏时样式 */</span></span><br><span class="line">@media all and (orientation: portrait) {</span><br><span class="line"> body::after {</span><br><span class="line"> content: <span class="string">"竖屏"</span></span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"><span class="comment">/* 横屏时样式 */</span></span><br><span class="line">@media all and (orientation: landscape) {</span><br><span class="line"> body::after {</span><br><span class="line"> content: <span class="string">"横屏"</span></span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p></p><p>使用场景：页面需要用户开启横屏来获得更好的体验</p><h3 id="17-getBoundingClientRect（元素空间结构详细信息）"><a href="#17-getBoundingClientRect（元素空间结构详细信息）" class="headerlink" title="17.getBoundingClientRect（元素空间结构详细信息）"></a>17.getBoundingClientRect（元素空间结构详细信息）</h3><ul><li>getBoundingClientRect<br>可以获取指定元素在当前页面的空间信息：<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line">elem.getBoundingClientRect();</span><br><span class="line"><span class="comment">// 返回</span></span><br><span class="line">{</span><br><span class="line"> x: <span class="number">604.875</span>,</span><br><span class="line"> y: <span class="number">1312</span>,</span><br><span class="line"> width: <span class="number">701.625</span>,</span><br><span class="line"> height: <span class="number">31</span>,</span><br><span class="line"> top: <span class="number">1312</span>,</span><br><span class="line"> right: <span class="number">1306.5</span>,</span><br><span class="line"> bottom: <span class="number">1343</span>,</span><br><span class="line"> left: <span class="number">604.875</span></span><br><span class="line">}</span><br></pre></td></tr></table></figure></li></ul><p>注意：top是距离文档顶部的距离，y则是距离可视窗口（浏览器屏幕）的顶部距离，如果浏览器滚动，top值不变，y值会变</p><p>· MDN <a href="https://developer.mozilla.org/zh-CN/docs/Web/API" target="_blank" rel="noopener">Web API接口</a></p><!-- rebuild by neat -->]]></content>
<summary type="html">
<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h3 id="1-closest（元素向上查询）"><a href="#1-closest（元素向上查询）" class="headerlink"
</summary>
<category term="前端" scheme="http://algate.github.io/categories/%E5%89%8D%E7%AB%AF/"/>
<category term="JavaScript" scheme="http://algate.github.io/tags/JavaScript/"/>
<category term="WebApi" scheme="http://algate.github.io/tags/WebApi/"/>
</entry>
<entry>
<title>JavaScript工具相关使用</title>
<link href="http://algate.github.io/archives/JS190426.html"/>
<id>http://algate.github.io/archives/JS190426.html</id>
<published>2019-04-26T02:38:30.000Z</published>
<updated>2019-08-26T03:33:07.431Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h3 id="1-serve"><a href="#1-serve" class="headerlink" title="1.serve"></a>1.serve</h3><p>不用express,不用部署http环境,可以直接运行编译后代码</p><p>用法：serve -s ./docs -p 8888</p><p>安装：node环境<br>全局安装 serve 依赖 （ cnpm install -g serve ）</p><h3 id="2-font-spider"><a href="#2-font-spider" class="headerlink" title="2.font-spider"></a>2.font-spider</h3><p>打包文件之后，可以压缩页面中引用的字体文件（字体图标除外）</p><p>用法：font-spider ./html文件路径</p><p>安装：cnpm install font-spider -g</p><!-- rebuild by neat -->]]></content>
<summary type="html">
<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h3 id="1-serve"><a href="#1-serve" class="headerlink" title="1.serve"></a>
</summary>
<category term="前端" scheme="http://algate.github.io/categories/%E5%89%8D%E7%AB%AF/"/>
<category term="JavaScript" scheme="http://algate.github.io/tags/JavaScript/"/>
<category term="打包工具" scheme="http://algate.github.io/tags/%E6%89%93%E5%8C%85%E5%B7%A5%E5%85%B7/"/>
</entry>
<entry>
<title>睡前收入睡后收入第一节</title>
<link href="http://algate.github.io/archives/54500.html"/>
<id>http://algate.github.io/archives/54500.html</id>
<published>2019-04-16T12:19:00.000Z</published>
<updated>2019-12-25T02:37:57.289Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><blockquote><blockquote><p>睡前收入，睡后收入。你能明白，你就实现了自由！</p></blockquote></blockquote><p><img src="/images/note01-01.jpg" alt="image"></p><p>一个人，只要不是含着金钥匙出生的，财富最初总是靠出售体力或智力劳动换来的，并在满足我们消费需求之后，通过配置在不同的资产上获取。套用一句流行语，或者是“睡前收入”，或者是“睡后收入”。</p><p>所谓睡前收入，就是你干活就有、睡着了就没有的那种，使用自己的体力或者智力还钱。所谓睡后收入，就是被动性收入，哪怕你睡着了，它也在自动增值。两种收入形态中，很明显，睡后收入占比越高，你就有越多可供自由支配的时间，所做选择受到的制约也就越少。收入来源全部由睡后收入构成，就进入了所谓财务自由状态。</p><p>受限于认知水平，我们最先接触到的睡后收入，可能都是银行存款,还是年回报率“高”达0.35%的活期存款，其后由于你多学习了一点点，你可能开始会搞阿里余额宝、腾讯理财通、甲银行B理财…… ，收益率开始从0.35%提升到3%~5%之间。<br>这一步很容易实现，是因为这个回报率依然远在社会平均财富增长值之下，属于将自己辛辛苦苦卖体力或者脑力换来的财富，无偿地送给别人一部分。将财富从自己口袋里掏出来.</p><!-- rebuild by neat -->]]></content>
<summary type="html">
<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><blockquote><blockquote><p>睡前收入，睡后收入。你能明白，你就实现了自由！</p></blockquote></blockq
</summary>
<category term="日记" scheme="http://algate.github.io/categories/%E6%97%A5%E8%AE%B0/"/>
<category term="理财" scheme="http://algate.github.io/tags/%E7%90%86%E8%B4%A2/"/>
</entry>
<entry>
<title>Node好用的工具集绵</title>
<link href="http://algate.github.io/archives/201903091523.html"/>
<id>http://algate.github.io/archives/201903091523.html</id>
<published>2019-03-09T07:23:01.000Z</published>
<updated>2019-12-24T08:11:20.496Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h2 id="No-1-serve"><a href="#No-1-serve" class="headerlink" title="No.1 serve"></a>No.1 serve</h2><p>cnpm install -g serve</p><p>写博客发布后、项目打包要上线…… 你要花一分钟预览下，index.html启动的文件是否可以正产使用<br>之前，我一直使用node+http-server+express 等搭建的弄得环境来启动。需要把文件拷贝到搭建的环境目录里，费时费力</p><p>无意中，我发现了一个好用的Node工具 很简单的名字: serve</p><p>打包之后，发布后，可以直接启动ps，运行命令<code>serve -s -p 8080</code><br>如果在文件夹里边启动ps,直接<code>serve</code>就可以了<br>如果实在文件夹外部，<code>serve folder</code>也可以了</p><p>可以加端口号，<code>-p 5001</code> 默认是 <code>5000</code></p><!-- rebuild by neat -->]]></content>
<summary type="html">
<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h2 id="No-1-serve"><a href="#No-1-serve" class="headerlink" title="No.1 se
</summary>
<category term="工具" scheme="http://algate.github.io/categories/%E5%B7%A5%E5%85%B7/"/>
<category term="node" scheme="http://algate.github.io/tags/node/"/>
<category term="dependencies" scheme="http://algate.github.io/tags/dependencies/"/>
</entry>
<entry>
<title>uniapp大揭秘-初遇</title>
<link href="http://algate.github.io/archives/201903091436.html"/>
<id>http://algate.github.io/archives/201903091436.html</id>
<published>2019-03-09T06:36:01.000Z</published>
<updated>2019-12-24T08:11:20.506Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h3 id="1-uniapp命令行"><a href="#1-uniapp命令行" class="headerlink" title="1.uniapp命令行"></a>1.uniapp命令行</h3><p>命令行敲击的快感，谁用谁知道，so为的项目是vue安装项目的</p><h3 id="2-uniapp-pages-json"><a href="#2-uniapp-pages-json" class="headerlink" title="2.uniapp-pages.json"></a>2.uniapp-pages.json</h3><p>要访问的每个页面都要在此文件中进行初始配置</p><figure class="highlight"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br></pre></td><td class="code"><pre><span class="line">{</span><br><span class="line"> pages:[{</span><br><span class="line"> "path": "pages/ucenter/ucenter",</span><br><span class="line"> "style": {</span><br><span class="line"> <!-- 此处为单个文件配置，不过不配置，优先使用globalStyle里的配置内容 --></span><br><span class="line"> "navigationBarTitleText": "不谈理想",</span><br><span class="line"> "navigationBarBackgroundColor": "#1C88E8",</span><br><span class="line"> "navigationBarTextStyle": "white",</span><br><span class="line"> /* 是否开启下拉刷新 */</span><br><span class="line"> "enablePullDownRefresh" : true</span><br><span class="line"> "app-plus": {</span><br><span class="line"> "bounce": "none",</span><br><span class="line"> <!-- titleNView设置为false，顶部导航就没有了 --></span><br><span class="line"> "titleNView": {</span><br><span class="line"> "buttons": [{</span><br><span class="line"> "text": "\uf0e0",</span><br><span class="line"> "fontSrc": "/static/fonts/fontawesome-webfont.ttf",</span><br><span class="line"> "fontSize": "22px",</span><br><span class="line"> "float": "left"</span><br><span class="line"> },</span><br><span class="line"> {</span><br><span class="line"> <span class="attr">"text"</span>: <span class="string">"\uf1de"</span>,</span><br><span class="line"> <span class="attr">"fontSrc"</span>: <span class="string">"/static/fonts/fontawesome-webfont.ttf"</span>,</span><br><span class="line"> <span class="attr">"fontSize"</span>: <span class="string">"22px"</span></span><br><span class="line"> }]</span><br><span class="line"> }</span><br><span class="line"> },</span><br><span class="line"> "h5": {</span><br><span class="line"></span><br><span class="line"> },</span><br><span class="line"> /* 应用小程序组件 */</span><br><span class="line"> "usingComponents": {</span><br><span class="line"></span><br><span class="line"> },</span><br><span class="line"> /* 窗口背景色 */</span><br><span class="line"> "backgroundColor": "#ECEFF2"</span><br><span class="line"> }</span><br><span class="line"> }],</span><br><span class="line"> <!-- 页面菜单栏显示 --></span><br><span class="line"> "tabBar": {</span><br><span class="line"> "color": "#73787C",</span><br><span class="line"> "selectedColor": "#1B88EF",</span><br><span class="line"> "backgroundColor": "#FFFFFF",</span><br><span class="line"> "borderStyle": "white",</span><br><span class="line"> "list": [{</span><br><span class="line"> "pagePath": "pages/list/list",</span><br><span class="line"> "iconPath": "static/home.png",</span><br><span class="line"> "selectedIconPath": "static/home-active.png",</span><br><span class="line"> "text": "发现"</span><br><span class="line"> },{</span><br><span class="line"> "pagePath": "pages/bookrack/list",</span><br><span class="line"> "iconPath": "static/home.png",</span><br><span class="line"> "selectedIconPath": "static/home-active.png",</span><br><span class="line"> "text": "书架"</span><br><span class="line"> },{</span><br><span class="line"> "pagePath": "pages/idea/list",</span><br><span class="line"> "iconPath": "static/home.png",</span><br><span class="line"> "selectedIconPath": "static/home-active.png",</span><br><span class="line"> "text": "想法"</span><br><span class="line"> }, {</span><br><span class="line"> "pagePath": "pages/ucenter/ucenter",</span><br><span class="line"> "iconPath": "static/center.png",</span><br><span class="line"> "selectedIconPath": "static/center-active.png",</span><br><span class="line"> "text": "我"</span><br><span class="line"> }]</span><br><span class="line"> }</span><br></pre></td></tr></table></figure><h3 id="3-uniapp-manifest-json"><a href="#3-uniapp-manifest-json" class="headerlink" title="3.uniapp-manifest.json"></a>3.uniapp-manifest.json</h3><p>项目整体配置文件<br>最近自己写项目遇到个问题，请求接口设置代理的问题，网上写的没有一个我能用的，最后在自己的不断尝试中竟然解决了。<br>1.未设置DevServer，假如你8080端口号没被占用，启动项目，就是8080端口号<br>2.假如8080端口号被占用，启动项目，就是8081.这个非常人性化了。假如先启动该项目，启动别的8080就不行了哦，注意<br>3.router，base初始的时候是很长一段路径，我是为了解决代理问题才改的，你可以不改哦！<br>4.proxy: pathRewrite-是吧路径中的字段替换成什么，跟你创建的vue，react等项目一样。<br></p><figure class="highlight json"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br></pre></td><td class="code"><pre><span class="line">{</span><br><span class="line"> <span class="attr">"h5"</span> : {</span><br><span class="line"> <span class="attr">"router"</span> : {</span><br><span class="line"> <span class="attr">"base"</span> : <span class="string">"/"</span></span><br><span class="line"> },</span><br><span class="line"> <span class="attr">"template"</span> : <span class="string">"h5.template.html"</span>,</span><br><span class="line"> <span class="attr">"devServer"</span>: {</span><br><span class="line"> <span class="attr">"port"</span>: <span class="number">8081</span>,</span><br><span class="line"> <span class="attr">"disableHostCheck"</span>: <span class="literal">true</span>,</span><br><span class="line"> <span class="attr">"proxy"</span>: {</span><br><span class="line"> <span class="attr">"/api"</span>: {</span><br><span class="line"> <span class="attr">"target"</span>: <span class="string">"https://api.douban.com"</span>,</span><br><span class="line"> <span class="attr">"changeOrigin"</span>: <span class="literal">true</span>,</span><br><span class="line"> <span class="attr">"secure"</span>: <span class="literal">false</span>,</span><br><span class="line"> <span class="attr">"pathRewrite"</span>: {<span class="attr">"^/api"</span> : <span class="string">""</span>}</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p></p><p>这是我的配置文件，本想贴出原始代码的，不过，写这篇文章时，正好没有网络。</p><!-- rebuild by neat -->]]></content>
<summary type="html">
<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><h3 id="1-uniapp命令行"><a href="#1-uniapp命令行" class="headerlink" title="1.uni
</summary>
<category term="前端" scheme="http://algate.github.io/categories/%E5%89%8D%E7%AB%AF/"/>
<category term="uniapp" scheme="http://algate.github.io/tags/uniapp/"/>
<category term="移动端" scheme="http://algate.github.io/tags/%E7%A7%BB%E5%8A%A8%E7%AB%AF/"/>
</entry>
<entry>
<title>永久免费翻樯大杀器(不限速)</title>
<link href="http://algate.github.io/archives/61443.html"/>
<id>http://algate.github.io/archives/61443.html</id>
<published>2017-08-24T08:12:19.000Z</published>
<updated>2019-12-25T06:43:50.653Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><blockquote><p>网上免费翻墙的网站、软件、账号越来越少了，不是要天天签到就是不定时更换帐号密码，速度不理想，也不稳定。今天推荐GFW.Press。需要翻墙注册，无翻墙软件的可下载Lantern，用法不多说，自己动手丰衣足食。</p></blockquote><h3 id="现在已经大家都能够翻樯了-接下来就要使用免费服务了"><a href="#现在已经大家都能够翻樯了-接下来就要使用免费服务了" class="headerlink" title="现在已经大家都能够翻樯了.接下来就要使用免费服务了:"></a>现在已经大家都能够翻樯了.接下来就要使用免费服务了:</h3><h4 id="1-登录gfw-press官网-这里需要翻樯"><a href="#1-登录gfw-press官网-这里需要翻樯" class="headerlink" title="1.登录gfw.press官网(这里需要翻樯)"></a>1.登录gfw.press官网<strong>(这里需要翻樯)</strong></h4><h4 id="2-点击注册"><a href="#2-点击注册" class="headerlink" title="2.点击注册"></a>2.点击注册</h4><h4 id="3-注册成功后点击登录-你将会看到节点信息"><a href="#3-注册成功后点击登录-你将会看到节点信息" class="headerlink" title="3.注册成功后点击登录,你将会看到节点信息"></a>3.注册成功后点击登录,你将会看到节点信息</h4><p><img src="http://dn-cnode.qbox.me/FjRR4JHK1lc6SzxNtnAc8HmumyOH" alt="image"></p><h4 id="4-下载gfw-press软件"><a href="#4-下载gfw-press软件" class="headerlink" title="4.下载gfw.press软件"></a>4.下载gfw.press软件</h4><h4 id="5-安装完毕后双击打开-并安装gfw-press官网中提供的账号填入节点-端口以及密码"><a href="#5-安装完毕后双击打开-并安装gfw-press官网中提供的账号填入节点-端口以及密码" class="headerlink" title="5.安装完毕后双击打开,并安装gfw.press官网中提供的账号填入节点,端口以及密码."></a>5.安装完毕后双击打开,并安装gfw.press官网中提供的账号填入节点,端口以及密码.</h4><h4 id="6-打开谷歌浏览器-搜索chrome网上应用店-打开并搜索插件switchomega-安装插件-这里需要翻樯"><a href="#6-打开谷歌浏览器-搜索chrome网上应用店-打开并搜索插件switchomega-安装插件-这里需要翻樯" class="headerlink" title="6.打开谷歌浏览器,搜索chrome网上应用店,打开并搜索插件switchomega,安装插件 (这里需要翻樯)"></a>6.打开谷歌浏览器,搜索chrome网上应用店,打开并搜索插件switchomega,安装插件 (这里需要翻樯)</h4><p><img src="http://dn-cnode.qbox.me/FjJmrA7AVIocymjZN_-SN2RgrPih" alt="image"></p><h4 id="7-下载完毕后-你的谷歌浏览器右上角将多出一个小图标-单击选项按钮进入管理界面"><a href="#7-下载完毕后-你的谷歌浏览器右上角将多出一个小图标-单击选项按钮进入管理界面" class="headerlink" title="7.下载完毕后,你的谷歌浏览器右上角将多出一个小图标.单击选项按钮进入管理界面."></a>7.下载完毕后,你的谷歌浏览器右上角将多出一个小图标.单击选项按钮进入管理界面.</h4><p><img src="http://n//dn-cnode.qbox.me/FvkjspPx9UswCmRl07ZUkxnqSJ8q" alt="image"></p><h4 id="8-进入管理界面后-进行如下配置"><a href="#8-进入管理界面后-进行如下配置" class="headerlink" title="8.进入管理界面后,进行如下配置"></a>8.进入管理界面后,进行如下配置</h4><ul><li>新建情景模式</li></ul><p><img src="http://dn-cnode.qbox.me/FkRw9vxJhAECricmXA4xbjG318x6" alt="image"></p><ul><li>填入路由信息</li></ul><p><img src="http://dn-cnode.qbox.me/FqqxP52d_OWXfxc2BZMuHViObcsm" alt="image"></p><!-- rebuild by neat -->]]></content>
<summary type="html">
<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><blockquote><p>网上免费翻墙的网站、软件、账号越来越少了，不是要天天签到就是不定时更换帐号密码，速度不理想，也不稳定。今天推荐GFW.P
</summary>
<category term="工具" scheme="http://algate.github.io/categories/%E5%B7%A5%E5%85%B7/"/>
<category term="翻墙" scheme="http://algate.github.io/tags/%E7%BF%BB%E5%A2%99/"/>
</entry>
<entry>
<title>JavaScript代码检查工具对比</title>
<link href="http://algate.github.io/archives/26064.html"/>
<id>http://algate.github.io/archives/26064.html</id>
<published>2017-04-03T07:51:30.000Z</published>
<updated>2019-02-27T03:29:53.800Z</updated>
<content type="html"><![CDATA[<!-- build time:Wed Jul 29 2020 13:46:53 GMT+0800 (GMT+08:00) --><p><img src="https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1503571860528&di=0fecd1d75a0d57851a782f0da053a047&imgtype=jpg&src=http%3A%2F%2Fimg0.imgtn.bdimg.com%2Fit%2Fu%3D3845209004%2C4113255300%26fm%3D214%26gp%3D0.jpg" alt="image"></p><p>JavaScript代码校验工具能够让你在写代码时避免一些低级的错误。尽管我有很多年的开发经验，我仍然会犯一些语法错误并且忘记处理我的错误。一个好的校验工具或者格式化工具，可以让我避免这些错误，以免浪费我的时间。一个好的校验工具还能确保一个项目保持一个固定的代码风格。</p><p>有很多关于JavaScript的校验工具，你怎样选择其中的某一个呢？让我们一起来看看它们有什么样的特性以及优缺点。接下来我要介绍四种常用的选择：JSLint，JSHint，JSCS和ESLint。</p><h2 id="Overview"><a href="#Overview" class="headerlink" title="Overview"></a>Overview</h2><p>这四个工具的基本用法都是类似的，它们定义了一套规则用来解析和报告js文件里面的问题。它们都可以通过npm来进行安装。可以通过命令行来调用它们，给命令行传递文件参数，也可以作为grunt这一类工具的插件被使用，或者可以集成到编辑器中。它们都支持使用注释作为配置。</p><p>以上就是它们所有的相似之处了，每一个工具都有优缺点，只是有些工具相比于其它工具更加有优势。</p><h2 id="JSLint"><a href="#JSLint" class="headerlink" title="JSLint"></a>JSLint</h2><p>JSLint是这四种校验工具中最为古老的。Douglas Crockford（译注:《JavaScript 语言精粹》的作者）在2002年创造了它，它是强制使用的，为了保留它所认为的JavaScript这门语言的精华部分。如果你认同他的观点，对你而言，JSLint将会是一个好的工具。安装完成马上即可使用。</p><p>JSLint的缺点是它是不可以进行配置和扩展的。你不能禁用它的某些特性，并且缺乏文档。它的官网并没有什么用处，例如，它缺少如果将这个工具整合到你的编辑器的任何信息。</p><h3 id="优点："><a href="#优点：" class="headerlink" title="优点："></a>优点：</h3><ul><li>配置规则都已经定好了，安装即可使用（如果你同意这些强制的规则的话）</li></ul><h3 id="缺点："><a href="#缺点：" class="headerlink" title="缺点："></a>缺点：</h3><ul><li>JSLint没有可配置文件，你无法对它的规则进行更改</li><li>配置规则的数量有限，有些规则无法禁用</li><li>不支持自定义规则</li><li>缺少文档</li><li>很难定位到哪条规则导致了错误</li></ul><h2 id="JSCSC"><a href="#JSCSC" class="headerlink" title="JSCSC"></a>JSCSC</h2><p>JSCS和以上两个都是不同的，如果不给它一个配置文件或者使用一套预设的规则，它将什么也不做不了，不过你可以从别的网站下载配置文件，所以这并不是什么大问题，并且它有很多的预设规则，比如说jQuery的代码风格的预设规则以及Google的代码风格的预设规则。</p><p>它有超过90种不同的规则，并且你可以通过插件创造自定义规则。JSCS也支持自定义输出报告，这使得其更容易与需要其以特定格式输入的工具集成。</p><p>JSCS是一个代码风格检查器，这意味着它只捕获与代码格式相关的问题，而不包含潜在的错误。因此，它比其他工具的灵活性更低，但是如果您需要强制执行特定的编码风格，那么JSCS就可以做的很好。</p><h3 id="优点：-1"><a href="#优点：-1" class="headerlink" title="优点："></a>优点：</h3><ul><li>支持自定义输出报告，可以使其更容易和其它工具进行集成</li><li>如果您遵循现有的可用编码风格之一，预设和现成的配置文件可以轻松设置</li><li>在报告中，有一个标志包含在规则名之中，所以很容易找出是哪条规则导致了错误</li><li>可以利用自定义的插件进行拓展</li></ul><h3 id="缺点：-1"><a href="#缺点：-1" class="headerlink" title="缺点："></a>缺点：</h3><ul><li>只检测到代码风格的违规，不检测潜在的错误，比如说未使用的变量或者变量的全局污染等</li><li>四个工具中性能最差的，但是这并不是一个典型用途的问题</li></ul><h2 id="ESLint"><a href="#ESLint" class="headerlink" title="ESLint"></a>ESLint</h2><p>ESLint是这四个工具中最新的，它被设计为易于拓展的，具有大量的自定义规则，并且很容易通过插件的形式来安装。它输出简洁的报告，但是默认包含规则的名称，因此你始终知道是那条规则导致了错误的信息。</p><p>ESLint的文档多少有些混乱，规则的列表容易查找，并且按逻辑进行分类，但配置说明在某些地方有点混乱。然而，它提供了如何对编辑器进行集成，插件和示例的链接。</p><h3 id="优点：-2"><a href="#优点：-2" class="headerlink" title="优点："></a>优点：</h3><ul><li>灵活：任何规则都可以切换使用，并且有些规则有额外的配置可以使用</li><li>可拓展性好，并且有很多可用的插件</li><li>易于理解的输出报告</li><li>包含一些其它工具所没有的规则，使得ESLint更容易检测出代码中潜在的错误</li><li>对ES6的支持性最好，是唯一支持JSX的工具</li><li>支持自定义输出报告</li></ul><h3 id="缺点：-2"><a href="#缺点：-2" class="headerlink" title="缺点："></a>缺点：</h3><ul><li>需要一些配置</li><li>性能差，但这并不是主要的障碍</li></ul><h2 id="推荐"><a href="#推荐" class="headerlink" title="推荐"></a>推荐</h2><p>一个好的校验工具是捕捉问题非常重要的一步，但是它只能检测出它的规则许可范围之内的错误。对于更多简单明了的bug的捕捉，我建议使用单元测试，Code reviews也是也是不错的方式。</p><!-- rebuild by neat -->]]></content>
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