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How to implement countdown function in js? (accurate to milliseconds)

藏色散人Original: 2018-08-06 15:16:544063browse

This article mainly introduces the effect of js to achieve countdown, and it is accurate to milliseconds. Friends who need it can refer to it. I hope it will be helpful to everyone.

The specific code examples for js implementation of countdown are as follows:

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="author" content="" />
    <title>js精确到毫秒的倒计时代码 </title>
    <script type="text/javascript" src="jquery-1.8.3.min.js"></script>
    <script type="text/javascript">
        $(document).ready(function() {
            var times = 60 * 100; // 60秒
            countTime = setInterval(function() {
                times = --times < 0 ? 0 : times;
                var ms = Math.floor(times / 100).toString();

                if(ms.length <= 1) {
                    ms = "0" + ms;
                }
                var hm = Math.floor(times % 100).toString();
                if(hm.length <= 1) {
                    hm = "0" + hm;
                }
                if(times == 0) {
                    alert("游戏结束");
                    clearInterval(countTime);
                }
                // 获取分钟、毫秒数
                $(".a").html(ms);
                $(".b").html(hm);
            }, 10);
        });
    </script>
    <style>
        .warp{
            width: 100%;
            height: 100px;
            line-height: 100px;
            text-align: center;
            font-size: 40px;
            font-family: "微软雅黑";
        }
        .warp strong{
            width: 100px;
            display: inline-block;
            text-align: center;
            font-family: georgia;
            color: #C9302C;
        }
    </style>
</head>
<body>
<div class="warp">
    <strong class="a">111</strong>秒 <strong class="b"></strong>毫秒</div>
<div style="text-align:center;margin:50px 0; font:normal 14px/24px &#39;MicroSoft YaHei&#39;;">
</div>
</body>
</html>

How to implement countdown function in js? (accurate to milliseconds)

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