文件结构：
server代码：
var http = require('http'); var fs = require('fs'); var websocket = require('socket.io'); var socketIo = websocket.listen(80); var server = http.createServer(function(request,response){ fs.readFile(__dirname+request.url,function(err,data){ response.setHeader("Server","TestName"); response.setHeader("Expires", 'Wed, 28 May 2017 09:54:57 GMT'); response.setHeader("Cache-Control", "max-age=10000000000"); //ajax访问时，没它会报错 response.setHeader("Access-Control-Allow-Origin", "*"); //返回类型 response.writeHead(200, {'Content-Type': 'text/html'}); response.end(data); }); }); socketIo.on('connection', function(socket){ console.log('a user connected'); socket.on("disconnect", function() { console.log("a user go out"); }); socket.on("msgFromBroswer", function(obj) { socketIo.emit("msgFromServer", obj); console.log(obj); console.log(obj.msg); }); }); server.listen(3000); console.log('listening port 3000');
index.html代码：
<html> <head> <script src="http://cdn.bootcss.com/socket.io/2.0.1/socket.io.js"></script> </head> <body> websocket </body> </html> <script> var socket = io.connect('ws://127.0.0.1:80'); socket.emit("msgFromBroswer", {"name" : navigator.userAgent, "msg" : "hello world"}); socket.on("msgFromServer", function(obj) { console.log(obj); }); </script>
PS：别忘了初始化引用的模块