<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>定时器</title>
<script type="text/javascript">
var attime;
function clock(){
var time=new Date();
attime=time;
document.getElementById("clock").value = attime;
}
setInterval(clock,1000);
//隔一秒运行一次
</script>
</head>
<body>
<form>
<input type="text" id="clock" size="50" />
</form>
</body>
</html>
/*把attime=time；改为
attime=time.getMonth()+":"+time.getDate()+":"+time.getHours()+":"+time.getMinutes()+":"+time.getSeconds();
从新提交后 所得时间会闪烁，求解 */
运行的时间长了，当让会闪烁了