Nod1

app.js

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+var mymodule=require('./log.js');
+mymodule.info('  This is my first nodjs');

data.js

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+module.exports={
+    firstName:'Wakil',
+    middleName:'khan',
+    lastName:'wazir'
+};

index.js

@@ -1,20 +1,36 @@
-// var mysql = require('mysql');
+//====================================simple-node-logger uses
+// const log = require('simple-node-logger').createSimpleLogger('project.log');
+// const SimpleNodeLogger = require('simple-node-logger'),
+// 	opts = {
+// 		logFilePath:'mylogfile.log',
+// 		timestampFormat:'YYYY-MM-DD HH:mm:ss.SSS'
+// 	},
+// log = SimpleNodeLogger.createSimpleLogger( opts );
+// const log = require('simple-node-logger').createSimpleFileLogger('project.log');
+//sting literal exxports
 
-// var con = mysql.createConnection({
-//   host: "localhost",
-//   user: "yourusername",
-//   password: "yourpassword",
-//   database: "mydb"
-// });
+// var msg=require('./message.js');
+// console.warn(msg);
+//====================================   exports object
+// var msg=require('./message.js');
+// msg.log('hello wazir');
+//============================================================
+// var person=require('./data.js');
+// console.log('person full name is :  '+person.firstName+' '+person.middleName+' '+person.lastName);
+//=================================================================
+// var person=require('./person.js');
+// var person1=new person('jameski','borton');
+// console.log(person1.fullName());
+//============================================expressjs 
+// const express = require('express')
+// const app = express()
+// const port = 3000
 
-// con.connect(function(err) {
-//   if (err) throw err;
-//   console.log("Connected!");
-//   var sql = "CREATE TABLE customers (name VARCHAR(255), address VARCHAR(255))";
-//   con.query(sql, function (err, result) {
-//     if (err) throw err;
-//     console.log("Table created");
-//   });
-// });
-const color=require("color");
-console.log("hello".red);
+// app.get('/', (req, res) => {
+//   res.send('Hello World!');
+
+// })
+
+// app.listen(port, () => {
+//   console.log(`Example app listening on port ${port}`)
+// })

index2.js

@@ -43,17 +43,48 @@
 //Take advantage of console.log string
 // const name='Sindre';
 // log(chalk.green('Hello %s'),name);
-const http=require('http');
-const data=[{name:'ajman1',email:'ajman1234@gmail.com',contact:'52287'},
-{name:'ajman2',email:'ajman234@gmail.com',contact:'58987'},
-{name:'ajman3',email:'ajman145@gmail.com',contact:'5567'},
-{name:'ajman4',email:'ajman12784@gmail.com',contact:'590987'},
-{name:'ajman5',email:'ajman1784@gmail.com',contact:'599287'},
-{name:'ajman6',email:'ajman15434@gmail.com',contact:'577787'},
-{name:'ajman7',email:'ajman12894@gmail.com',contact:'54447'}];
-http.createServer((req,resp)=>{
-    resp.writeHead(200,{'Content-Type':'application/json'});
-    resp.write(JSON.stringify(data));
-    resp.end();
-}).listen(5000);
+//===============================================================================================
+//====================================simple-node-logger uses
+// const log = require('simple-node-logger').createSimpleLogger('project.log');
+// const SimpleNodeLogger = require('simple-node-logger'),
+// 	opts = {
+// 		logFilePath:'mylogfile.log',
+// 		timestampFormat:'YYYY-MM-DD HH:mm:ss.SSS'
+// 	},
+// log = SimpleNodeLogger.createSimpleLogger( opts );
+// const log = require('simple-node-logger').createSimpleFileLogger('project.log');
+//sting literal exxports
 
+// var msg=require('./message.js');
+// console.warn(msg);
+//====================================   exports object
+// var msg=require('./message.js');
+// msg.log('hello wazir');
+//============================================================
+// var person=require('./data.js');
+// console.log('person full name is :  '+person.firstName+' '+person.middleName+' '+person.lastName);
+//=================================================================
+// var person=require('./person.js');
+// var person1=new person('jameski','borton');
+// console.log(person1.fullName());
+//============================================expressjs 
+// const express = require('express')
+// const app = express()
+// const port = 3000
+
+// app.get('/', (req, res) => {
+//   res.send('Hello World!');
+
+// })
+
+// app.listen(port, () => {
+//   console.log(`Example app listening on port ${port}`)
+// })
+//====================================================next example of http
+var http = require("http");
+
+http.createServer(function(request, response) {
+  response.writeHead(200, {"Content-Type": "text/plain"});
+  response.write("Hello World");
+  response.end();
+}).listen(8888);

log.js

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+var log={
+    info:function(info){
+        console.log('info'+info);
+    },
+    warning:function(warning){
+        console.log('warning'+warning);
+    },
+    error:function(error){
+        console.log('error'+error);
+    }
+};
+module.exports=log;

message.js

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+// module.exports='hello world';
+//====================================   exports object
+// exports.SimpleMessage='Hello ajman';
+//=============================================
+module.exports.log = function (msg) { 
+    console.log(msg);
+};

nodejsTask

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+