express_socket 聊天室

app.js


var express=require('express');

var app=express();

var DB=require('./module/db.js');


app.set('view engine','ejs');
app.use(express.static('public'));


//express里面使用socket.io
var server = require('http').Server(app);
var io = require('socket.io')(server);
server.listen(8000);


app.get('/',function(req,res){

    //res.send('首页');

    res.render('index');

})

app.get('/chat',function(req,res){

    //res.send('首页');

    var name=req.query.name;
    res.render('chat',{
        name:name
    });

})

//写socket.io 服务端
io.on('connection',function(socket){
    console.log('有个客户端连接了');
    socket.on('message',function(data){
        io.emit('message',data);  /*全部广播*/
    })
})

index.ejs

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <title></title>

    <style>
        html {
            height: 100%;
            background: url("banner-bg_2x.jpg") no-repeat center center / 100% auto #1B1C3B;
        }
        .box{
            width: 400px;
            height: 60px;
            display: flex;

            margin:200px auto;
        }
        .box input[type='text']{
            flex: 1;
            height: 60px;
            border: 1px solid #eee;
        }
        .box button{
            width: 100px;
            height: 64px;
            background: orange;
            color: #fff;
            border:none;
            cursor: pointer;
        }
    </style>
    <script src="jquery-1.11.3.min.js"></script>

    <script>

        $(function(){

            $('.login').click(function(){

                    var name=$('#name').val();
                    if(name){
                        location.href='/chat?name='+name;
                    }else{
                        alert('您的大名不对');
                    }
            })
        })
    </script>
</head>
<body>

<div class="box">
    <input type="text" placeholder="请输入您的大名" id="name"/> <button class="login">进入聊天室</button>
</div>
</body>
</html>

chat.js

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <title></title>
    <style>

        .inner{
            max-width: 640px;
            margin: 0 auto;


        }

        h2 {
            text-align: center;
            background: #eee;

            color: red;
            height: 50px;
            line-height: 50px;
        }

        .chat{
            padding:20px;
            border: 1px solid #f60;
            height: 500px;
        }

        .send{

            width: 100%;

            bottom:5px;
            height: 44px;
            line-height: 44px;
            display: flex;
            overflow-x: hidden;
        }

        .send input[type='text']{
            flex: 1;
        }

        .send input[type='button']{
            width: 100px;


        }


    </style>

    <script src="/socket.io/socket.io.js"></script>
    <script src="jquery-1.11.3.min.js"></script>
    <script>


        $(function(){


            var socket=io.connect('http://localhost:8000');


            socket.on('message',function(data){   /*监听服务器广播的数据*/

                $(".list").append(`<li><strong>${data.name}:</strong> ${data.msg}</li>`);

                $('#msg').val('');



               $('.footer').get(0).scrollIntoView(true);
            })

            //发送数据
            $('#send').click(function(){

                socket.emit('message',{
                    msg:$('#msg').val(),
                    name:'<%=name%>'
                })

            })


        })
    </script>
</head>
<body>

<div class="inner">
    <h2>小小聊天室</h2>

    <div class="chat" style="overflow-x: auto">
        <ul class="list">

        </ul>
       <p class="footer"> </p>

    </div>

    <div class="send">

        <input type="text" id="msg"/>
        <input type="button" id="send" value="发送"/>

    </div>
</div>
</body>
</html>

 

posted on 2020-07-19 22:45  LoaderMan  阅读(230)  评论(0)    收藏  举报

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