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JavaScript实现限时秒杀功能

时间:2022-03-23 10:01:35 | 栏目:JavaScript代码 | 点击:

本文实例为大家分享了JavaScript实现限时秒杀功能的具体代码,供大家参考,具体内容如下

<!DOCTYPE html>
<html>
 <head>
  <meta charset="utf-8">
  <title></title>
 </head>
 <body>
  <div class="box">
   <div id="d"></div>  <!-- 剩余的天数 -->
   <div id="h"></div>  <!-- 剩余的小时 -->
   <div id="m"></div>  <!-- 剩余的分钟 -->
   <div id="s"></div>  <!-- 剩余的秒数 -->
  </div>
  <script>
   //设置秒杀结束时间
   var endTime = new Date('2021-10-22 18:51:59'),endSeconds = endTime.getTime();
   //定义变量保存剩余的时间
   var d = h = m = s = 0;
   //设置定时器,实现限时秒杀效果
   var id = setInterval(seckill,1000);
   function seckill(){
    var nowTime = new Date(); //获取当前时间
     //获取时间差,单位为秒
     var remaining = parseInt((endSeconds - nowTime.getTime())/1000);
     if(remaining>0){//判断秒杀是否过期
     //计算剩余天数(除以60*60*24取整,获取剩余的天数)
      d=parseInt(remaining / 86400);
      //计算剩余小时(除以60*60转换为小时,与24小时取模,获取剩余的小时)
      h=parseInt((remaining / 3600) % 24);
      //计算剩余分钟(除以60转为分钟,与60取模,获取剩余的分钟)
      m=parseInt((remaining / 60) % 60);
      //计算剩余秒(与60取模,获取剩余的秒数)
      s=parseInt(remaining % 60);
      //统一利用两位数表示剩余的天、小时、分钟、秒
      d = d<10 ? '0' + d : d;
      h = h<10 ? '0' + h : h;
      m = m<10 ? '0' + m : m;
      s = s<10 ? '0' + s : s;
     }else{
      clearInterval(id);//秒杀过期,取消定时器
      d = h = m = s ='00';
     }
     //将剩余的天,小时,分钟和秒显示到指定的网页中
     document.getElementById('d').innerHTML = d + '天';
     document.getElementById('h').innerHTML = h + '时';
     document.getElementById('m').innerHTML = m + '分';
     document.getElementById('s').innerHTML = s + '秒';
   }
  </script>
 </body>
</html>

再为大家分享一个JS实现简单的限时秒杀案例:

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
        .product{  border: 3px solid orange; display: inline-block; margin-left: 400px; width: 400px;  }
        .red{  color: red; font-size: 25px;  }
    </style>
</head>
<body>


<div class="product" style="text-align: center;">
    <img src="jquery案例-百叶窗/images/0.jpg" alt="" width="150"/>
    <p>绝世好男人</p>
    <span>原价:<del>99亿</del></span>
    <br/>
    <span>现价:<span class="red">100块</span></span>
    <br/>
    <span>距离抢购结束还有:</span><span id="time"></span>
</div>


<script>


    var stopTime = new Date(3000,11,14,0,0,0);
    var nowTime = new Date();
    var jianGe = (stopTime-nowTime)/1000;


    var day = Math.floor(jianGe/60/60/24);
    var hour = Math.floor(jianGe/60/60%24);
    var min = Math.floor(jianGe/60%60);
    var sec = Math.floor(jianGe%60);
    var showTime = day+'天'+hour+'小时'+min+'分钟'+sec+'秒';
    document.getElementById('time').innerText = showTime;


    //定时器:每隔多长事件执行一次某函数
    //setInterval(func,ms)
    var timer = setInterval(function () {


        var nowTime = new Date();
        var jianGe = (stopTime-nowTime)/1000;


        var day = Math.floor(jianGe/60/60/24);
        var hour = Math.floor(jianGe/60/60%24);
        var min = Math.floor(jianGe/60%60);
        var sec = Math.floor(jianGe%60);


        var showTime = day+'天'+hour+'小时'+min+'分钟'+sec+'秒';


        document.getElementById('time').innerText = showTime;


        if(day==0&&hour==0&&min==0&&sec==0){
            //关闭定时器
            clearInterval(timer);
        }


    },1000);

</script>

</body>
</html>

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