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JAVA Script 学习之通过setTimeout 实现钟表的效果

2016-08-25 18:00 441 查看
<html>
<head>
<title>
钟表效果
</title>
<meta charset="utf-8">
</head>

<script type="text/javascript">
var today;
var hour;
var fen;
var s;
var todayAction;
function todayTimeAction () {
today = new Date();
hour = today.getHours();
fen = today.getMinutes();
s = today.getSeconds();

document.getElementById("timeTxt").innerHTML = hour+":"+fen+":"+s;
todayAction = setTimeout("todayTimeAction()", 500);
}

</script>

<body onload="todayTimeAction()">

<p> 北京时间</p>
</br>
<div id="timeTxt">

</div>

</body>
<html>
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