node.js SOCKET 实时通信

作者: 飞鱼_JS | 来源:发表于2017-05-24 14:39 被阅读0次

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//客户端---------------------
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
    <h1>实时通讯</h1>
    <textarea cols="50" id="content" rows="10"></textarea>
    <br>
    <input type="text" id="msg" >
    <input type="submit" value="提交" id="btn">
    <script type="text/javascript" src="/socket.io/socket.io.js"></script>
    <script type="text/javascript">
        var socket = io("http://localhost:3000");
        var btn = document.getElementById("btn");
        var msg = document.getElementById("msg");
        var content = document.getElementById("content");

        var user = "tempUser"+ Math.floor(Math.random()*1000);
        btn.onclick = ()=>{
            var str = msg.value;
            socket.emit("sendMsg",user +":"+str);
        }

        socket.on("myNews",(msg)=>{
            console.log("msg",msg);
            content.value += msg +"\n";
        })
    </script>
</body>
</html>

//服务器端---------------------------
var http = require("http");
var fs = require("fs");
var io = require("socket.io");

var server = http.createServer((req,res)=>{
    if(req.url=="/"){
        fs.readFile("index.html",(err,data)=>{
            res.end(data);
        })
    }else {
        res.end("no page found");
    }
})

server.listen(3000);

var ioClass = require("socket.io");
var ioInstanct = ioClass(server);

ioInstanct.on("connection",(socket)=>{
    socket.on("sendMsg",(data)=>{
        console.log("dada:",data);
        ioInstanct.emit("myNews","服务器转发:"+data);
    });

})