socket.io學習之旅----小例子
阿新 • • 發佈：2018-12-20
{ "name": "client", "version": "1.0.0", "description": "", "main": "index.js", "scripts": { "test": "echo \"Error: no test specified\" && exit 1" }, "keywords": [], "author": "", "license": "ISC", "dependencies": { "express": "^4.15.2", "socket.io": "^2.1.1" } }
var app = require('express')(); var http = require('http').Server(app); var io = require('socket.io')(http); // app.get('/', function(req, res){ // res.send('<h1>Hello world</h1>'); // }); app.get('/', function(req, res){ res.sendFile(__dirname + '/index.html'); }) io.on('connection', function(socket){ console.log('a user connected'); socket.on('disconnect', function(){ console.log('user disconnected'); }); // socket.on('chat message', function(msg){ // console.log('message: ' + msg); // }); // socket.broadcast.emit('hi'); socket.on('chat message', function(msg){ console.log('message: ' + msg); io.emit('chat message', msg); }); }); http.listen(3000, function(){ console.log('listening on *:3000'); })
<!doctype html> <html> <head> <title>Socket.IO chat</title> <style> * { margin: 0; padding: 0; box-sizing: border-box; } body { font: 13px Helvetica, Arial; } form { background: #000; padding: 3px; position: fixed; bottom: 0; width: 100%; } form input { border: 0; padding: 10px; width: 90%; margin-right: .5%; } form button { width: 9%; background: rgb(130, 224, 255); border: none; padding: 10px; } #messages { list-style-type: none; margin: 0; padding: 0; } #messages li { padding: 5px 10px; } #messages li:nth-child(odd) { background: #eee; } </style> </head> <body> <ul id="messages"></ul> <form action=""> <input id="m" autocomplete="off" /><button>Send</button> </form> </body> <script src="/socket.io/socket.io.js"></script> <script src="https://code.jquery.com/jquery-1.11.1.js"></script> <script> $(function () { var socket = io(); $('form').submit(function(){ socket.emit('chat message', $('#m').val()); $('#m').val(''); return false; }); socket.on('chat message', function(msg){ $('#messages').append($('<li>').text(msg)); }); }); </script> </html>