ext.js打印出提示弹窗(鼓捣了两天终于尼玛出来了)

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=gbk" />

<title>EXTJS</title>

<link rel="stylesheet" type="text/css" href="css/ext-all.css"/>

<script type="text/javascript" src="js/bootstrap.js"></script>

<script type="text/javascript" src="js/ext-all.js"></script>

<script type="text/javascript">

    Ext.onReady(function () {

        Ext.MessageBox.alert("HelloWorld", "Hello World !");

    });

</script>

</head>

<body>

</body>

</html>