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<html>
<head>
<title>输入对话框</title>
</head>
<body>
<script language="javascript">
<!--
age = prompt("请输入你的年龄:","20");
if (age != null){
alert("你今年" + age +"岁了!");
}else{
alert("你按了[取消]按钮");
}
//-->
</script>
</body>
</html>
CSS代码...
JS代码...
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