ExtJs"入门"
学习地址：http://extjs.org.cn/node/83两段主要代码：
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
<title>zzk</title>
<link rel="stylesheet" type="text/css" href="../resources/css/ext-all.css" />
<script type="text/javascript" src="../adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="../ext-all.js"></script>
<script type="text/javascript">
Ext.onReady(function(){
alert('Hello World!');
});
</script>
</head>
<body>
这是UTF-8格式编写的body部分
</body>
</html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
<title>zzk</title>
<link rel="stylesheet" type="text/css" href="../resources/css/ext-all.css" />
<script type="text/javascript" src="../adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="../ext-all.js"></script>
<script type="text/javascript">
Ext.onReady(function(){
Ext.MessageBox.alert('Message','Hello World!');
});
</script>
</head>
<body>
这是UTF-8格式编写的body部分
</body>
</html>
简单解释一下上面代码
