<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Welcome to Ext JS 5.0</title> <meta name="description" content="Create amazing web apps built on web standards. Sencha Touch, HTML5 mobile app framework. Ext JS, cross-browser JavaScript framework. Ext GWT" /> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /> <link rel="shortcut icon" type="image/ico" href="/favicon.ico" /> <!-- 下面的文件都是下载好的extJs包中的 bulid目录下 --> <!-- 引入必须的css --> <link rel="stylesheet" href="build/packages/ext-theme-crisp/build/resources/ext-theme-crisp-all.css" type="text/css" /> <!-- 引入必须的js --> <script src="build/ext-all.js" type="text/javascript" charset="utf-8"></script> <script src="build/packages/ext-theme-crisp/build/ext-theme-crisp.js" type="text/javascript" charset="utf-8"></script> </head> <body> <script type="text/javascript"> //在页面加载完成之后执行 //Ext.onReady(function(){ // Ext.MessageBox.alert('hello','extJs 你好!'); //}); /* var win = new Ext.Window( { 400, height:300, title:"hello word", buttons:[{text:"确定"},{text:"取消"}], } ); win.show(); */ Ext.onReady(function(){ //定义一个类 Ext.define('Person',{ name:'jaune', age:18, //定义一个方法 see:function(){ alert('我的名字叫'+this.name); }, //构造函数 constructor:function(config){ //将配置的所有属性都复制到指定的对象 Ext.apply(this,config); } }); Ext.define('Man',{ extend:'Person', sex:'Male', constructor:function(config){ if(config != null){ if(config.hasOwnProperty('sex')){ delete config.sex; } } this.callParent([config]); }, toString:function(){ return { name:this.name, age:this.age, sex:this.sex } } }); var man = new Man({ name:'zh', age:12, sex:'man' }); alert(man.toString().sex); }); </script> </body> </html>