网站建设多选题百度文库,佛山网站建设的大品牌,网络广告的创意策略包括,wordpress函数视频今天群里一个同学找我要一个nodejs聊天室的demo。给他了一个简单的例子#xff0c;顺便记录下#xff1a;准备工作(前提是已经装好了nodejs)#xff1a;mkdir nodejs-democd nodejs-demo安装express : npm install express安装socket.io : npm install socket.io安装foreve…今天群里一个同学找我要一个nodejs聊天室的demo。给他了一个简单的例子顺便记录下准备工作(前提是已经装好了nodejs)mkdir nodejs-democd nodejs-demo安装express : npm install express安装socket.io : npm install socket.io安装forever: npm install forever -g安装完成之后会在目录下生成一个node_modules文件夹把下面的server.js和client.html放到node_modules下。下面是server.jsvar app require(express)();var http require(http).Server(app);var io require(socket.io)(http);var history new Array();app.get(/, function(req, res) {res.sendfile(client.html);});io.on(connection, function(socket) {socket.on(chat message, function(msg) {io.emit(chat message, msg);addMsg(msg);});socket.on(login message, function(msg) {socket.join(history room);for (var i 0;i i) {io.in(history room).emit(chat message, history[i]);}io.in(history room).emit(chat message, lyd__上面是最近的一些信息);socket.leave(history room);socket.join(chat room);io.emit(chat message, msg);addMsg(msg);});});http.listen(3000, function() {console.log(listening on *:3000);});function addMsg(msg) {history.push(msg);if (history.length 100)history.shift();};下面是client.html:demo* { margin: 0; padding: 0; box-sizing: border-box; }body { font: 20px Helvetica, Arial; }form { background: #000; padding: 3px; position: fixed; bottom: 0; width: 100%; }form input { border: 0; padding: 10px; width: 90%; }form button { width: 10%; background: rgb(130, 224, 255); border: none; padding: 10px; }#messages { list-style-type: none; margin: 0; padding: 0; }#messages li { padding: 5px 10px 5px 10px; }登录var socket io();var login true;var username ;var myDate new Date();$(form).submit(function() {if (login) {username $(#m).val();if (username.length 0) {alert(请输入用户名);return false;}login false;socket.emit(login message, lyd__ username 加入了聊天室 myDate.getMonth() - myDate.getDate() myDate.getHours() : myDate.getMinutes() : myDate.getSeconds());$(#btn).html(发送);} else {socket.emit(chat message, username ## $(#m).val());}$(#m).val();return false;});socket.on(chat message, function(msg) {var item msg.split(##, 2);if (msg.indexOf(lyd__) 0)$(#messages).append( msg.substr(5) );else if (msg.indexOf(username) 0) {$(#messages).append( item[0] :);$(#messages).append( item[1] );} else {$(#messages).append( item[0] :);$(#messages).append( item[1] );}});运行forever start server.js #启动 停止用stop然后访问 192.168.1.8:3000就可以聊天了打赏微信扫一扫打赏作者吧
