客户端：
1 <!DOCTYPE html> 2 <html> 3 <head> 4 ????<meta charset="utf-8" /> 5 ????<title>websoket</title> 6 </head> 7 <body> 8 ????<h1>chat room</h1> 9 ????<input type="text" id="msg" />10 ????<button id="send">发送</button>11 ????<script type="text/javascript">12 ????????var websocket = new WebSocket("ws://localhost:6666/");13 14 ????????function showMsg(str){15 ????????????var div = document.createElement(‘div‘);16 ????????????div.innerHTML = str;17 ????????????document.body.appendChild(div)18 ????????}19 20 ????????websocket.onopen=function(){21 ????????????console.log("open");22 ????????????document.getElementById(‘send‘).onclick = function() {23 ????????????????var txt = document.getElementById(‘msg‘).value;24 ????????????????if (txt) {25 ????????????????????websocket.send(txt);26 ????????????????}27 ????????????}28 ????????}29 ????????websocket.onclose = function() {30 ????????????console.log("close");31 ????????}32 ????????websocket.onmessage = function(e) {33 ????????????console.log(e.data);34 ????????????showMsg(e.data);35 ????????}36 ????</script>37 </body>38 </html>服务器端(node.js)：
1 var ws = require("nodejs-websocket") 2 ?3 var port = 6666; 4 ?5 var clientCount = 0; 6 ?7 var server = ws.createServer(function (conn) { 8 ????console.log("New connection") 9 ????clientCount++10 ????conn.nickname = "user" + clientCount11 ????broadcast("******* "+conn.nickname + " comes in *******");12 13 14 ????conn.on("text", function (str) {15 ????????console.log("Received "+str)16 ????????broadcast(conn.nickname + " say: " + str)17 ????})18 19 20 ????conn.on("close", function (code, reason) {21 ????????broadcast("******* " + conn.nickname + " left *******");22 ????})23 ????conn.on("error", function(err) {24 ????????console.log("error: "+err);25 ????})26 }).listen(port)27 28 console.log("websocket server listening on " + port);29 30 function broadcast (str) {31 ????server.connections.forEach(function (connection) {32 ????????connection.sendText(str)33 ????})34 }通过WebSocket实现一个简单的聊天室功能
原文地址：http://www.cnblogs.com/xiedashuaige/p/7684213.html