<!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=utf-8"
/>
<title>无标题文档</title>
<!---------
<script
type="text/javascript">
alert(new
Date().toLocaleDateString());
</script>----------->
//引用我的js文件：alert("用户，您好吗？？？");
<script src="myjs.js"
type="text/javascript">
</script>
<script
type="text/javascript">
var
i;
if(i==null)
{
alert("i为null");
}
if(typeof(i)=="undefined")
{
alert("i为undefined");
}
if(!i)
{
alert("非i");
}
</script>
</head>
<body>
<a
href="04章.html" onclick="alert(‘你点到我啦‘)">点我</a>
<a
href="javascript:alert(‘不好意思你有点到我啦‘)")>点点我</a>
<input type="button" value="点"
onclick="alert(‘你你你有有有点到我啦‘)"/>
</body>
</html>
原文：http://www.cnblogs.com/hublog6021/p/3011286.html