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1425 lines (1227 loc) · 51.8 KB
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>HashMap 索引定位动画演示</title>
<script src="https://cdn.tailwindcss.com"></script>
<link href="https://cdn.jsdelivr.net/npm/font-awesome@4.7.0/css/font-awesome.min.css" rel="stylesheet">
<link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap" rel="stylesheet">
<!-- Tailwind 配置 -->
<script>
tailwind.config = {
theme: {
extend: {
colors: {
primary: '#165DFF',
secondary: '#FF7D00',
success: '#00B42A',
danger: '#F53F3F',
dark: '#1D2129',
light: '#F2F3F5',
'hash-blue': '#4080FF',
'bit-highlight': '#722ED1',
'result-highlight': '#0FC6C2',
'calculating': '#FF9A2E'
},
fontFamily: {
inter: ['Inter', 'sans-serif'],
},
},
}
}
</script>
<style type="text/tailwindcss">
@layer utilities {
.content-auto {
content-visibility: auto;
}
.bit-box {
width: 24px;
height: 24px;
display: inline-flex;
align-items: center;
justify-content: center;
border: 1px solid #ccc;
margin: 0 1px;
font-family: monospace;
font-size: 12px;
transition: all 0.3s ease;
}
.bit-box-highlight {
background-color: rgba(114, 46, 209, 0.2);
border-color: #722ED1;
color: #722ED1;
font-weight: bold;
}
.bit-box-result {
background-color: rgba(15, 198, 194, 0.2);
border-color: #0FC6C2;
color: #0FC6C2;
font-weight: bold;
}
.bit-box-calculating {
background-color: rgba(255, 154, 46, 0.2);
border-color: #FF9A2E;
animation: pulse 0.6s infinite;
}
.animation-pulse {
animation: pulse 1.5s infinite;
}
@keyframes pulse {
0%, 100% { opacity: 0.7; }
50% { opacity: 1; transform: scale(1.05); }
}
.step-active {
border-color: #165DFF;
background-color: rgba(22, 93, 255, 0.1);
}
.arrow-animation {
animation: arrowMove 1s ease-in-out infinite;
}
@keyframes arrowMove {
0%, 100% { transform: translateX(0); }
50% { transform: translateX(5px); }
}
.bucket-highlight {
animation: bucketHighlight 1.5s infinite;
}
@keyframes bucketHighlight {
0%, 100% { box-shadow: 0 0 0 2px rgba(22, 93, 255, 0.5); }
50% { box-shadow: 0 0 0 4px rgba(22, 93, 255, 0.3); }
}
.fade-in {
animation: fadeIn 0.5s ease-in-out forwards;
}
@keyframes fadeIn {
from { opacity: 0; transform: translateY(10px); }
to { opacity: 1; transform: translateY(0); }
}
.value-change {
animation: valueChange 0.8s ease-out;
}
@keyframes valueChange {
0% { transform: scale(1); }
50% { transform: scale(1.2); color: #165DFF; }
100% { transform: scale(1); }
}
.operation-highlight {
animation: operationHighlight 1s ease-in-out infinite;
}
@keyframes operationHighlight {
0%, 100% { transform: scale(1); }
50% { transform: scale(1.1); color: #165DFF; }
}
}
</style>
</head>
<body class="font-inter bg-gray-50 text-dark">
<!-- 顶部导航 -->
<header class="bg-white shadow-md sticky top-0 z-50">
<div class="container mx-auto px-4 py-4">
<div class="flex items-center space-x-2">
<i class="fa fa-code-fork text-primary text-2xl"></i>
<h1 class="text-xl md:text-2xl font-bold text-primary">HashMap 索引定位动画</h1>
</div>
</div>
</header>
<!-- 主内容区 -->
<main class="container mx-auto px-4 py-8">
<!-- 介绍部分 -->
<section class="mb-8 text-center max-w-3xl mx-auto">
<h2 class="text-xl md:text-2xl font-bold mb-4">HashMap 索引定位过程可视化</h2>
<p class="text-gray-600 mb-6">直观展示 HashMap 中从键到索引的完整计算过程：hashCode() → 高位运算 → 异或操作 → 索引计算</p>
<div class="flex flex-col sm:flex-row gap-4 justify-center mb-6">
<div class="flex-1 max-w-xs">
<input type="text" id="keyInput" placeholder="输入键（例如：name）" value="name"
class="w-full px-4 py-3 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-primary/50">
</div>
<div class="flex gap-2">
<button id="startAnimation" class="bg-primary hover:bg-primary/90 text-white px-6 py-3 rounded-lg shadow-md transition-all flex items-center">
<i class="fa fa-play mr-2"></i> 开始动画
</button>
<button id="pauseAnimation" class="bg-secondary hover:bg-secondary/90 text-white px-4 py-3 rounded-lg shadow-md transition-all flex items-center hidden">
<i class="fa fa-pause"></i>
</button>
<button id="resetAnimation" class="bg-gray-200 hover:bg-gray-300 text-dark px-4 py-3 rounded-lg shadow-md transition-all flex items-center">
<i class="fa fa-refresh"></i>
</button>
</div>
</div>
<div class="flex flex-wrap items-center justify-center gap-4 text-sm text-gray-500">
<div class="flex items-center gap-2">
<span>容量大小:</span>
<select id="capacitySelect" class="border border-gray-300 rounded px-2 py-1">
<option value="16">16 (2⁴)</option>
<option value="32">32 (2⁵)</option>
<option value="64">64 (2⁶)</option>
<option value="128">128 (2⁷)</option>
</select>
</div>
<div class="flex items-center gap-2">
<span>动画速度:</span>
<input type="range" id="animationSpeed" min="500" max="3000" step="100" value="1500"
class="w-32 accent-primary">
<span id="speedValue">1.5s</span>
</div>
</div>
</section>
<!-- 动画演示区 -->
<section class="bg-white rounded-xl shadow-lg p-6 mb-10">
<!-- 步骤指示器 -->
<div class="flex flex-wrap justify-between mb-8 relative">
<div class="absolute top-1/2 left-0 right-0 h-1 bg-gray-200 -translate-y-1/2 z-0"></div>
<div class="absolute top-1/2 left-0 h-1 bg-primary -translate-y-1/2 z-10 transition-all duration-1000" id="progressBar" style="width: 0%"></div>
<div class="step flex flex-col items-center relative z-20 w-20" data-step="1">
<div class="w-10 h-10 rounded-full bg-white border-2 flex items-center justify-center mb-2 step-active">
<span>1</span>
</div>
<span class="text-sm text-center">计算 hashCode</span>
</div>
<div class="step flex flex-col items-center relative z-20 w-20" data-step="2">
<div class="w-10 h-10 rounded-full bg-white border-2 border-gray-300 flex items-center justify-center mb-2">
<span>2</span>
</div>
<span class="text-sm text-center">高位右移</span>
</div>
<div class="step flex flex-col items-center relative z-20 w-20" data-step="3">
<div class="w-10 h-10 rounded-full bg-white border-2 border-gray-300 flex items-center justify-center mb-2">
<span>3</span>
</div>
<span class="text-sm text-center">异或运算</span>
</div>
<div class="step flex flex-col items-center relative z-20 w-20" data-step="4">
<div class="w-10 h-10 rounded-full bg-white border-2 border-gray-300 flex items-center justify-center mb-2">
<span>4</span>
</div>
<span class="text-sm text-center">索引计算</span>
</div>
<div class="step flex flex-col items-center relative z-20 w-20" data-step="5">
<div class="w-10 h-10 rounded-full bg-white border-2 border-gray-300 flex items-center justify-center mb-2">
<span>5</span>
</div>
<span class="text-sm text-center">定位结果</span>
</div>
</div>
<!-- 动画内容区 -->
<div class="space-y-10">
<!-- 步骤1: 计算hashCode -->
<div id="step1" class="step-content">
<h3 class="text-lg font-semibold mb-4 flex items-center">
<span class="w-8 h-8 rounded-full bg-primary text-white flex items-center justify-center mr-2">1</span>
计算键的 hashCode()
</h3>
<div class="bg-light rounded-lg p-6">
<div class="mb-4">
<p class="mb-2"><code class="bg-white px-2 py-1 rounded">key.hashCode()</code> 方法返回键的哈希码</p>
<div class="flex items-center flex-wrap">
<span class="mr-2">计算过程: </span>
<div id="hashCodeCalculation" class="font-medium"></div>
<span class="mx-2">→</span>
<span id="step1HashCode" class="font-medium">正在计算...</span>
</div>
</div>
<div class="mt-6">
<p class="mb-3">32位二进制表示:</p>
<div id="hashCodeBits" class="flex flex-wrap gap-1 justify-center"></div>
</div>
</div>
</div>
<!-- 步骤2: 高位右移 -->
<div id="step2" class="step-content hidden">
<h3 class="text-lg font-semibold mb-4 flex items-center">
<span class="w-8 h-8 rounded-full bg-primary text-white flex items-center justify-center mr-2">2</span>
高位右移 16 位 (hashCode <span class="operation-highlight">>>></span> 16)
</h3>
<div class="bg-light rounded-lg p-6">
<p class="mb-4">将 hashCode 的高16位移动到低16位，保留哈希码的高位信息用于后续计算</p>
<div class="grid grid-cols-1 md:grid-cols-2 gap-6">
<div>
<p class="mb-2 font-medium">原始 hashCode:</p>
<div id="originalBits" class="flex flex-wrap gap-1 justify-center"></div>
<div class="text-center mt-2 text-sm text-gray-500">高16位 ← 低16位</div>
</div>
<div class="relative">
<div class="absolute top-1/2 left-1/2 transform -translate-x-1/2 -translate-y-1/2 text-gray-400 hidden md:block">
<i class="fa fa-long-arrow-down arrow-animation text-2xl"></i>
</div>
<p class="mb-2 font-medium">右移 16 位后:</p>
<div id="shiftedBits" class="flex flex-wrap gap-1 justify-center"></div>
<div class="text-center mt-2 text-sm text-gray-500">高16位(补0) ← 原高16位</div>
</div>
</div>
</div>
</div>
<!-- 步骤3: 异或运算 -->
<div id="step3" class="step-content hidden">
<h3 class="text-lg font-semibold mb-4 flex items-center">
<span class="w-8 h-8 rounded-full bg-primary text-white flex items-center justify-center mr-2">3</span>
异或运算 (hashCode <span class="operation-highlight">^</span> (hashCode >>> 16))
</h3>
<div class="bg-light rounded-lg p-6">
<p class="mb-4">将原始哈希码与右移后的哈希码进行异或运算，混合高低位信息，减少哈希冲突</p>
<div class="space-y-6">
<div class="grid grid-cols-1 md:grid-cols-3 gap-4 items-end">
<div>
<p class="mb-2 font-medium">原始 hashCode:</p>
<div id="xorOriginalBits" class="flex flex-wrap gap-1 justify-center"></div>
</div>
<div class="text-center">
<div class="text-xl font-bold text-gray-500 operation-highlight">^</div>
</div>
<div>
<p class="mb-2 font-medium">右移后的值:</p>
<div id="xorShiftedBits" class="flex flex-wrap gap-1 justify-center"></div>
</div>
</div>
<div class="text-center">
<div class="text-xl font-bold text-gray-500">=></div>
</div>
<div>
<p class="mb-2 font-medium">最终哈希值 (hash):</p>
<div id="finalHashBits" class="flex flex-wrap gap-1 justify-center"></div>
<div class="mt-2 text-center">
<span class="font-medium">十进制值: </span>
<span id="finalHashDecimal" class="text-primary font-medium"></span>
</div>
</div>
</div>
</div>
</div>
<!-- 步骤4: 索引计算 -->
<div id="step4" class="step-content hidden">
<h3 class="text-lg font-semibold mb-4 flex items-center">
<span class="w-8 h-8 rounded-full bg-primary text-white flex items-center justify-center mr-2">4</span>
计算索引 (hash <span class="operation-highlight">&</span> (capacity - 1))
</h3>
<div class="bg-light rounded-lg p-6">
<p class="mb-4">通过与运算计算最终索引，等价于 hash % capacity，但效率更高</p>
<div class="space-y-6">
<div class="grid grid-cols-1 md:grid-cols-3 gap-4 items-end">
<div>
<p class="mb-2 font-medium">哈希值 (hash):</p>
<div id="indexHashBits" class="flex flex-wrap gap-1 justify-center"></div>
</div>
<div class="text-center">
<div class="text-xl font-bold text-gray-500 operation-highlight">&</div>
</div>
<div>
<p class="mb-2 font-medium">capacity - 1 (当前容量: <span id="currentCapacity">16</span>):</p>
<div id="capacityMinusOneBits" class="flex flex-wrap gap-1 justify-center"></div>
</div>
</div>
<div class="text-center">
<div class="text-xl font-bold text-gray-500">=></div>
</div>
<div>
<p class="mb-2 font-medium">索引值:</p>
<div id="indexBits" class="flex flex-wrap gap-1 justify-center"></div>
<div class="mt-2 text-center">
<span class="font-medium">十进制值: </span>
<span id="indexDecimal" class="text-secondary font-bold text-xl"></span>
</div>
</div>
</div>
</div>
</div>
<!-- 步骤5: 定位结果 -->
<div id="step5" class="step-content hidden">
<h3 class="text-lg font-semibold mb-4 flex items-center">
<span class="w-8 h-8 rounded-full bg-primary text-white flex items-center justify-center mr-2">5</span>
定位到哈希桶
</h3>
<div class="bg-light rounded-lg p-6">
<p class="mb-6 text-center">键 <span id="resultKey" class="font-medium text-primary"></span> 最终被定位到索引为 <span id="resultIndex" class="font-medium text-secondary"></span> 的哈希桶中</p>
<div id="bucketsContainer" class="flex flex-wrap gap-3 justify-center mt-6">
<!-- 哈希桶将通过JS动态生成 -->
</div>
</div>
</div>
</div>
<!-- 导航按钮 -->
<div class="flex justify-between mt-10">
<button id="prevBtn" class="bg-gray-200 hover:bg-gray-300 text-dark px-6 py-2 rounded-lg shadow-md transition-all flex items-center opacity-50 cursor-not-allowed">
<i class="fa fa-arrow-left mr-2"></i> 上一步
</button>
<button id="nextBtn" class="bg-primary hover:bg-primary/90 text-white px-6 py-2 rounded-lg shadow-md transition-all flex items-center">
下一步 <i class="fa fa-arrow-right ml-2"></i>
</button>
</div>
</section>
<!-- 解释说明部分 -->
<section class="grid md:grid-cols-2 gap-6 mb-10">
<div class="bg-white rounded-xl shadow-lg p-6">
<h3 class="text-lg font-semibold mb-3 flex items-center">
<i class="fa fa-info-circle text-primary mr-2"></i> 为什么这样计算索引？
</h3>
<ul class="space-y-2 text-gray-600 text-sm">
<li class="flex items-start">
<i class="fa fa-check-circle text-success mt-1 mr-2"></i>
<span>通过混合高低位信息，减少哈希冲突的概率</span>
</li>
<li class="flex items-start">
<i class="fa fa-check-circle text-success mt-1 mr-2"></i>
<span>使用位运算 (hash & (n-1)) 替代取模运算，效率更高</span>
</li>
<li class="flex items-start">
<i class="fa fa-check-circle text-success mt-1 mr-2"></i>
<span>当容量是2的幂时，hash & (n-1) 等价于 hash % n</span>
</li>
<li class="flex items-start">
<i class="fa fa-check-circle text-success mt-1 mr-2"></i>
<span>确保计算出的索引在 [0, capacity-1] 范围内</span>
</li>
</ul>
</div>
<div class="bg-white rounded-xl shadow-lg p-6">
<h3 class="text-lg font-semibold mb-3 flex items-center">
<i class="fa fa-code text-primary mr-2"></i> Java 源码对应实现
</h3>
<div class="bg-light p-4 rounded-lg font-mono text-sm overflow-x-auto">
<pre>// 计算哈希值
static final int hash(Object key) {
int h;
return (key == null) ? 0 : (h = key.hashCode()) ^ (h >>> 16);
}
// 计算索引
int index = hash(key) & (table.length - 1);</pre>
</div>
</div>
</section>
</main>
<!-- 页脚 -->
<footer class="bg-dark text-white py-6">
<div class="container mx-auto px-4 text-center text-gray-400 text-sm">
© HashMap 索引定位动画演示 | 展示哈希计算到索引确定的完整过程
</div>
</footer>
<script>
// 全局变量
let currentStep = 1;
let totalSteps = 5;
let animationSpeed = 1500; // 动画速度，毫秒
let stepAnimationSpeed = 50; // 步骤内动画速度，毫秒
let hashCode = 0;
let shiftedHashCode = 0;
let finalHash = 0;
let index = 0;
let capacity = 16;
let isAnimating = false; // 防止动画叠加
let isAutoPlaying = false; // 是否自动播放中
let animationInterval = null; // 自动播放计时器
let currentTimeouts = []; // 当前步骤中的计时器，用于暂停功能
let currentIntervals = []; // 当前步骤中的间隔计时器
// DOM 元素
const keyInput = document.getElementById('keyInput');
const startBtn = document.getElementById('startAnimation');
const pauseBtn = document.getElementById('pauseAnimation');
const resetBtn = document.getElementById('resetAnimation');
const prevBtn = document.getElementById('prevBtn');
const nextBtn = document.getElementById('nextBtn');
const progressBar = document.getElementById('progressBar');
const capacitySelect = document.getElementById('capacitySelect');
const currentCapacityEl = document.getElementById('currentCapacity');
const animationSpeedSlider = document.getElementById('animationSpeed');
const speedValueDisplay = document.getElementById('speedValue');
// 初始化
document.addEventListener('DOMContentLoaded', () => {
updateCapacity();
updateSpeedDisplay();
calculateAndDisplayAll();
setupEventListeners();
});
// 设置事件监听器
function setupEventListeners() {
// 开始动画按钮
startBtn.addEventListener('click', startAnimation);
// 暂停动画按钮
pauseBtn.addEventListener('click', pauseAnimation);
// 重置按钮
resetBtn.addEventListener('click', resetAnimation);
// 上一步/下一步按钮
prevBtn.addEventListener('click', () => {
if (!isAnimating) goToPrevStep();
});
nextBtn.addEventListener('click', () => {
if (!isAnimating) goToNextStep();
});
// 容量选择变化
capacitySelect.addEventListener('change', () => {
if (!isAnimating) {
capacity = parseInt(capacitySelect.value);
updateCapacity();
if (currentStep >= 4) {
calculateAndDisplayIndex();
if (currentStep >= 5) {
displayBuckets();
}
}
}
});
// 动画速度调节
animationSpeedSlider.addEventListener('input', () => {
animationSpeed = parseInt(animationSpeedSlider.value);
updateSpeedDisplay();
});
// 键输入变化
keyInput.addEventListener('change', () => {
if (!isAnimating) resetAnimation();
});
// 步骤点击
document.querySelectorAll('.step').forEach(stepEl => {
stepEl.addEventListener('click', () => {
if (!isAnimating) {
const step = parseInt(stepEl.dataset.step);
if (step <= currentStep) {
goToStep(step);
}
}
});
});
}
// 更新容量显示
function updateCapacity() {
currentCapacityEl.textContent = capacity;
document.getElementById('capacitySelect').value = capacity;
}
// 更新速度显示
function updateSpeedDisplay() {
speedValueDisplay.textContent = (animationSpeed / 1000).toFixed(1) + 's';
}
// 清除当前所有计时器和间隔器
function clearAllTimers() {
// 清除超时计时器
currentTimeouts.forEach(timeout => clearTimeout(timeout));
currentTimeouts = [];
// 清除间隔计时器
currentIntervals.forEach(interval => clearInterval(interval));
currentIntervals = [];
}
// 添加超时计时器并跟踪
function setTimeoutTracked(callback, delay) {
const timeout = setTimeout(callback, delay);
currentTimeouts.push(timeout);
return timeout;
}
// 添加间隔计时器并跟踪
function setIntervalTracked(callback, delay) {
const interval = setInterval(callback, delay);
currentIntervals.push(interval);
return interval;
}
// 计算所有值
function calculateAllValues() {
const key = keyInput.value.trim() || 'defaultKey';
// 计算 hashCode (模拟Java的String.hashCode()实现)
hashCode = 0;
for (let i = 0; i < key.length; i++) {
hashCode = 31 * hashCode + key.charCodeAt(i);
}
// 处理负数，转为无符号表示
hashCode = hashCode & 0xFFFFFFFF;
// 高位右移16位
shiftedHashCode = hashCode >>> 16;
// 异或运算得到最终哈希值
finalHash = hashCode ^ shiftedHashCode;
// 计算索引
index = finalHash & (capacity - 1);
}
// 计算并显示所有步骤
function calculateAndDisplayAll() {
calculateAllValues();
displayStep1(false);
}
// 显示步骤1: hashCode计算，带动画
function displayStep1(animate = true) {
clearAllTimers();
const key = keyInput.value.trim() || 'defaultKey';
// 显示hashCode计算过程
const calculationEl = document.getElementById('hashCodeCalculation');
calculationEl.innerHTML = '';
// 显示二进制位容器
const bitsContainer = document.getElementById('hashCodeBits');
bitsContainer.innerHTML = '';
let binaryStr = padWithLeadingZeros(hashCode.toString(2), 32);
// 创建所有位元素但不显示
for (let i = 0; i < 32; i++) {
const bitEl = document.createElement('div');
bitEl.className = 'bit-box opacity-0';
bitEl.textContent = binaryStr[i];
bitsContainer.appendChild(bitEl);
}
// 计算hashCode的过程动画
let currentHash = 0;
const hashCodeEl = document.getElementById('step1HashCode');
hashCodeEl.textContent = '0';
// 显示计算步骤：s[0]*31^(n-1) + s[1]*31^(n-2) + ... + s[n-1]
if (animate) {
isAnimating = true;
let step = 0;
// 显示每个字符的计算过程
const calculationSteps = [];
for (let i = 0; i < key.length; i++) {
const char = key.charAt(i);
const code = key.charCodeAt(i);
calculationSteps.push({
char: char,
code: code,
step: i
});
}
// 执行计算动画
const calculationInterval = setIntervalTracked(() => {
if (step < calculationSteps.length) {
const { char, code, step: i } = calculationSteps[step];
const prevHash = currentHash;
currentHash = 31 * currentHash + code;
// 更新计算过程显示
if (step === 0) {
calculationEl.innerHTML += `${code} (字符 '${char}')`;
} else {
calculationEl.innerHTML += ` → 31 × ${prevHash} + ${code} (字符 '${char}')`;
}
// 更新哈希值显示
hashCodeEl.textContent = currentHash;
hashCodeEl.classList.add('value-change');
setTimeoutTracked(() => {
hashCodeEl.classList.remove('value-change');
}, 500);
step++;
} else {
clearAllTimers();
// 最终处理负数
if (currentHash < 0) {
calculationEl.innerHTML += ` → 处理负数 → ${hashCode}`;
setTimeoutTracked(() => {
hashCodeEl.textContent = hashCode;
hashCodeEl.classList.add('value-change');
setTimeoutTracked(() => {
hashCodeEl.classList.remove('value-change');
}, 500);
}, 500);
}
// 二进制位逐个显示的动画
setTimeoutTracked(() => {
const bitElements = bitsContainer.querySelectorAll('.bit-box');
let bitIndex = 0;
const bitInterval = setIntervalTracked(() => {
if (bitIndex < 32) {
bitElements[bitIndex].classList.remove('opacity-0');
bitElements[bitIndex].classList.add('fade-in');
// 高亮高16位
if (bitIndex < 16) {
setTimeoutTracked(() => {
bitElements[bitIndex].classList.add('bit-box-highlight');
}, 200);
}
bitIndex++;
if (bitIndex === 32) {
clearAllTimers();
isAnimating = false;
// 如果是自动播放模式，继续下一步
if (isAutoPlaying) {
setTimeoutTracked(() => {
if (currentStep < totalSteps) {
goToStep(currentStep + 1);
} else {
stopAutoPlay();
}
}, animationSpeed / 2);
}
}
}
}, stepAnimationSpeed);
}, 800);
}
}, 1000);
} else {
// 不带动画直接显示
let calculationHTML = '';
for (let i = 0; i < key.length; i++) {
const char = key.charAt(i);
const code = key.charCodeAt(i);
if (i === 0) {
calculationHTML += `${code} (字符 '${char}')`;
} else {
calculationHTML += ` → 31 × 前值 + ${code} (字符 '${char}')`;
}
}
if (hashCode < 0) {
calculationHTML += ` → 处理负数 → ${hashCode}`;
}
calculationEl.innerHTML = calculationHTML;
hashCodeEl.textContent = hashCode;
// 显示所有位
const bitElements = bitsContainer.querySelectorAll('.bit-box');
bitElements.forEach((el, i) => {
el.classList.remove('opacity-0');
if (i < 16) {
el.classList.add('bit-box-highlight');
}
});
}
}
// 显示步骤2: 高位右移，带动画
function displayStep2(animate = true) {
clearAllTimers();
// 原始hashCode的32位二进制
const originalContainer = document.getElementById('originalBits');
originalContainer.innerHTML = '';
let originalBinary = padWithLeadingZeros(hashCode.toString(2), 32);
// 创建原始位元素
for (let i = 0; i < 32; i++) {
const bitEl = document.createElement('div');
bitEl.className = 'bit-box';
bitEl.textContent = originalBinary[i];
originalContainer.appendChild(bitEl);
}
// 右移16位后的32位二进制
const shiftedContainer = document.getElementById('shiftedBits');
shiftedContainer.innerHTML = '';
let shiftedBinary = padWithLeadingZeros(shiftedHashCode.toString(2), 32);
// 创建右移位元素但不显示
for (let i = 0; i < 32; i++) {
const bitEl = document.createElement('div');
bitEl.className = 'bit-box opacity-0';
bitEl.textContent = shiftedBinary[i];
shiftedContainer.appendChild(bitEl);
}
if (animate) {
isAnimating = true;
// 高亮原始hashCode的高16位
const originalBits = originalContainer.querySelectorAll('.bit-box');
let highlightIndex = 0;
const highlightInterval = setIntervalTracked(() => {
if (highlightIndex < 16) {
originalBits[highlightIndex].classList.add('bit-box-highlight');
highlightIndex++;
} else {
clearAllTimers();
// 模拟右移动画
setTimeoutTracked(() => {
const shiftedBits = shiftedContainer.querySelectorAll('.bit-box');
// 先显示高16位的0
for (let i = 0; i < 16; i++) {
setTimeoutTracked(() => {
shiftedBits[i].classList.remove('opacity-0');
shiftedBits[i].classList.add('fade-in');
}, i * stepAnimationSpeed);
}
// 再显示从原高16位移过来的位
for (let i = 0; i < 16; i++) {
setTimeoutTracked(() => {
shiftedBits[i + 16].classList.remove('opacity-0');
shiftedBits[i + 16].classList.add('fade-in', 'bit-box-highlight');
// 原始位添加动画效果表示移动
originalBits[i].classList.add('bit-box-calculating');
setTimeoutTracked(() => {
originalBits[i].classList.remove('bit-box-calculating');
}, 500);
}, (i + 16) * stepAnimationSpeed);
}
// 动画完成
setTimeoutTracked(() => {
clearAllTimers();
isAnimating = false;
// 如果是自动播放模式，继续下一步
if (isAutoPlaying) {
setTimeoutTracked(() => {
if (currentStep < totalSteps) {
goToStep(currentStep + 1);
} else {
stopAutoPlay();
}
}, animationSpeed / 2);
}
}, 32 * stepAnimationSpeed);
}, 500);
}
}, stepAnimationSpeed);
} else {
// 不带动画直接显示
const originalBits = originalContainer.querySelectorAll('.bit-box');
for (let i = 0; i < 16; i++) {
originalBits[i].classList.add('bit-box-highlight');
}
const shiftedBits = shiftedContainer.querySelectorAll('.bit-box');
shiftedBits.forEach((el, i) => {
el.classList.remove('opacity-0');
if (i >= 16) {
el.classList.add('bit-box-highlight');
}
});
}
}
// 显示步骤3: 异或运算，带动画 - 优化版本
function displayStep3(animate = true) {
clearAllTimers();
// 原始hashCode的32位二进制
const originalContainer = document.getElementById('xorOriginalBits');
originalContainer.innerHTML = '';
let originalBinary = padWithLeadingZeros(hashCode.toString(2), 32);
for (let i = 0; i < 32; i++) {
const bitEl = document.createElement('div');
bitEl.className = 'bit-box';
bitEl.textContent = originalBinary[i];
originalContainer.appendChild(bitEl);
}
// 右移16位后的32位二进制
const shiftedContainer = document.getElementById('xorShiftedBits');
shiftedContainer.innerHTML = '';
let shiftedBinary = padWithLeadingZeros(shiftedHashCode.toString(2), 32);
for (let i = 0; i < 32; i++) {
const bitEl = document.createElement('div');
bitEl.className = 'bit-box';
bitEl.textContent = shiftedBinary[i];
shiftedContainer.appendChild(bitEl);
}
// 最终哈希值的32位二进制
const finalContainer = document.getElementById('finalHashBits');
finalContainer.innerHTML = '';
let finalBinary = padWithLeadingZeros(finalHash.toString(2), 32);
document.getElementById('finalHashDecimal').textContent = finalHash;
// 创建最终哈希位元素但不显示
for (let i = 0; i < 32; i++) {
const bitEl = document.createElement('div');
bitEl.className = 'bit-box opacity-0';
bitEl.textContent = finalBinary[i];
finalContainer.appendChild(bitEl);
}
if (animate) {
isAnimating = true;
// 获取所有位元素引用
const originalBits = originalContainer.querySelectorAll('.bit-box');
const shiftedBits = shiftedContainer.querySelectorAll('.bit-box');
const finalBits = finalContainer.querySelectorAll('.bit-box');
// 先高亮操作符
const operationEl = document.querySelector('#step3 .operation-highlight');
operationEl.classList.add('animation-pulse');
// 优化：使用requestAnimationFrame和递归代替setInterval
let bitIndex = 0;
function processNextBit() {
if (bitIndex < 32 && isAnimating) {
// 高亮当前计算的位
originalBits[bitIndex].classList.add('bit-box-calculating');
shiftedBits[bitIndex].classList.add('bit-box-calculating');
// 计算异或结果并显示
setTimeout(() => {
finalBits[bitIndex].classList.remove('opacity-0');
finalBits[bitIndex].classList.add('fade-in');
// 如果结果为1（两数不同），添加结果高亮
if (originalBinary[bitIndex] !== shiftedBinary[bitIndex]) {
finalBits[bitIndex].classList.add('bit-box-result');
}
// 移除计算高亮
originalBits[bitIndex].classList.remove('bit-box-calculating');
shiftedBits[bitIndex].classList.remove('bit-box-calculating');
bitIndex++;
// 安排处理下一位，使用requestAnimationFrame确保平滑动画
requestAnimationFrame(() => {
setTimeout(processNextBit, 50); // 控制位处理速度
});
// 检查是否处理完所有位
if (bitIndex === 32) {
finishXorAnimation(operationEl);
}
}, 200);
}
}
// 开始处理第一位
processNextBit();
} else {
// 不带动画直接显示
const finalBits = finalContainer.querySelectorAll('.bit-box');
finalBits.forEach((el, i) => {
el.classList.remove('opacity-0');
if (originalBinary[i] !== shiftedBinary[i]) {
el.classList.add('bit-box-result');
}
});
}
}
// 异或运算动画完成处理函数
function finishXorAnimation(operationEl) {
clearAllTimers();
operationEl.classList.remove('animation-pulse');
// 显示最终十进制值并添加动画
setTimeout(() => {
const decimalEl = document.getElementById('finalHashDecimal');
decimalEl.classList.add('value-change');
setTimeout(() => {
decimalEl.classList.remove('value-change');
isAnimating = false;
// 如果是自动播放模式，继续下一步
if (isAutoPlaying) {
setTimeout(() => {
if (currentStep < totalSteps) {
goToStep(currentStep + 1);
} else {
stopAutoPlay();
}
}, animationSpeed / 2);
}
}, 500);
}, 500);
}
// 计算并显示索引，带动画
function calculateAndDisplayIndex(animate = true) {
clearAllTimers();
// 重新计算索引（容量可能已变化）
index = finalHash & (capacity - 1);
// 哈希值的32位二进制