js天时分秒倒计时（转）

时间 2020-05-31

原文原文链接

<!DOCTYPE html>
<html lang="en">
<head>javascript

<meta charset="UTF-8">
<title>js简单时分秒倒计时</title>
<script type="text/javascript">
    function countTime() {
        //获取当前时间
        var date = new Date();
        var now = date.getTime();
        //设置截止时间
        var endDate = new Date("2016-10-22 23:23:23");
        var end = endDate.getTime();
        //时间差
        var leftTime = end-now;
        //定义变量 d,h,m,s保存倒计时的时间
        var d,h,m,s;
        if (leftTime>=0) {
            d = Math.floor(leftTime/1000/60/60/24);
            h = Math.floor(leftTime/1000/60/60%24);
            m = Math.floor(leftTime/1000/60%60);
            s = Math.floor(leftTime/1000%60);                   
        }
        //将倒计时赋值到div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";
        //递归每秒调用countTime方法，显示动态时间效果
        setTimeout(countTime,1000);

    }
</script>

</head >
<body onload = "countTime()">html

<div>
    <span id="_d">00</span>
    <span id="_h">00</span>
    <span id="_m">00</span>
    <span id="_s">00</span>
</div>

</body>
</html>java