Nodejs实现WebSocket

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1.nodejs服务端开启socket服务：

var ws = require('nodejs-websocket');console.log('开始建立连接...')ws.createServer(function (conn) {    conn.on('text', function (str) {        console.log('收到的信息为:' + str)        conn.sendText(str)    })    conn.on('close', function (code, reason) {        console.log('关闭连接', code, reason)    });    conn.on('error', function (code, reason) {        console.log('异常关闭', code, reason)    });}).listen(8001)console.log('WebSocket建立完毕');

2.html5端测试程序：

<!doctype html><html lang="en"><head>    <meta charset="UTF-8">    <meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />    <title>WebSocket</title>    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" rel="stylesheet">    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">    <style>        body{            width: 96%;            margin-left: 2%;            margin-top: 20px;        }    </style></head><body><div class="btn-group box" role="group" aria-label="...">    <button type="button" class="btn btn-default">Oppo</button>    <button type="button" class="btn btn-default">Vivo</button>    <button type="button" class="btn btn-default">Apple</button></div><div class="page-header">    <h5 class="info">服务器返回信息列表:</br></br></h5></div><script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.js"></script><script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script><script>    if (window.WebSocket) {        var ws = new WebSocket('ws://127.0.0.1:8001');        ws.onopen = function () {            console.log('连接服务器成功!');            ws.send('startting...');        }        ws.onclose = function () {            console.log('服务器关闭');        }        ws.onerror = function () {            console.log("连接出错");        }        ws.onmessage = function (e) {            document.querySelector(".box").onclick = function (e) {                ws.send('当前点击框的内容为:<font style="color:red;" >' + e.target.innerHTML+'</font>');            }            $('.info').append(e.data + '</br></br>');        }    }</script></body></html>

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