<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Constellation</title>
<script type="text/javascript">
function timer()
{
var time=new Date();
document.getElementById("currentTime").innerHTML="当前时间:"+time;
}
setInterval("timer()", 1000);
</script>
</head>
<body>
<div id="currentTime">当前时间：时间载入中......</div>
<div>
</body>
</html>
原文：http://www.cnblogs.com/whlei/p/4034093.html