This article describes the digital clock effect of web page countdown implemented by JS. Share it for your reference. The specific implementation method is as follows:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http:///TR/xhtml1/DTD/">
<html xmlns="http:///1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>javascriptImplemented countdown clock</title>
<style>
body,div{margin:0;padding:0;}
body{color:#fff;font:16px/1.5 \5fae\8f6f\96c5\9ed1;}
#countdown{width:300px;text-align:center;background:#1a1a1a;margin:10px auto;padding:20px 0;}
input{border:0;width:283px;height:50px;cursor:pointer;margin-top:20px;background:url(https:///jscss/demoimg/201210/) no-repeat;}
{background-position:0 -50px;}
span{color:#000;width:80px;line-height:2;background:#fbfbfb;border:2px solid #b4b4b4;margin:0 10px;padding:0 10px;}
</style>
<script>
= function ()
{
var oCountDown = ("countdown");
var aInput = ("input")[0];
var timer = null;
= function ()
{
== "" ? (timer = setInterval(updateTime, 1000), updateTime()) : (clearInterval(timer));
= == '' ? "cancel" : '';
};
function format(a)
{
return ().replace(/^(\d)$/,'0$1')
}
function updateTime ()
{
var aSpan = ("span");
var oRemain = aSpan[0].(/^0/,'') * 60 + parseInt(aSpan[1].(/^0/,''));
if(oRemain <= 0)
{
clearInterval(timer);
return
}
oRemain--;
aSpan[0].innerHTML = format(parseInt(oRemain / 60));
oRemain %= 60;
aSpan[1].innerHTML = format(parseInt(oRemain));
}
}
</script>
</head>
<body>
<div >
<span>01</span>minute<span>40</span>Second
<input type="button" value="" />
</div>
</body>
</html>
Learn from this article. I hope this article will be helpful to everyone's JS programming.