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JS - 实现简单的限时秒杀案例

2018-03-09 10:09 806 查看
<!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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