JavaScript实现秒杀时钟倒计时

时间:2021-04-02 人气:0

功能介绍：

1.时/分/秒倒计时直至为零

所有代码

<!DOCTYPE html>
<html>
 <head>
 <meta charset="utf-8" />
 <title>倒计时</title>
 <style type="text/css">
 *{
 margin:0; 
 padding:0;
 }
 span{
 display: inline-block;
 width: 60px;
 height: 60px;
 border-radius: 50%;
 background: black;
 color: white;
 font-size: 30px;
 text-align: center;
 line-height: 60px;
 }
 i{
 font-style: normal;
 font-size: 20px;
 }
 </style>
 </head>
 <body>
 <span id="hs">1</span>
 <i>:</i>
 <span id="ms">59</span>
 <i>:</i>
 <span id="ss">47</span>
 </body>
</html>
<script type="text/javascript">
//倒计时
var count = 1;
var Counter;
function countDown(){ //调用
 Counter = setInterval(f,1000);
} 
countDown(); //自运行
//倒计时
function f(){
 var hs = Number(document.getElementById("hs").innerHTML);
 var ms = Number(document.getElementById("ms").innerHTML);
 var ss = Number(document.getElementById("ss").innerHTML);
 if(hs==0&&ms==0&&ss==0||ss>60||ms>60||hs>24){
 var hs = document.getElementById("hs").innerHTML = "00";
 var ms = document.getElementById("ms").innerHTML = "00";
 var ss = document.getElementById("ss").innerHTML = "00";
 clearInterval(Counter);
 console.log(count);
 return;
}
 if(ss>0){
 ss--;
 document.getElementById("ss").innerHTML = ss;
 count++;
 }
 if(ss==0){
 if(ms>0){
 ms--;
 document.getElementById("ms").innerHTML = ms;
 document.getElementById("ss").innerHTML = 59;
 }
 
 }
 if(ms==0){
 if(hs>0){
 hs--;
 document.getElementById("hs").innerHTML = hs;
 document.getElementById("ms").innerHTML = 59;
 }
 
 }
}
 
</script>

更多JavaScript时钟特效点击查看：JavaScript时钟特效专题

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