多个定时器任务

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <ul>
        <li class="time0"></li>
        <li class="time1"></li>
        <li class="time2"></li>
    </ul>
    <script src="http://code.jquery.com/jquery-2.1.1.min.js"></script>
    <script>
        var data = [
            {
                id: 1,
                time: 20000
            },
            {
                id: 2,
                time: 15000
            },
            {
                id: 3,
                time: 40000
            }
        ]
        
        function cutTime(cutTotalTime, index){
            var timer = setInterval(function(){
                if(cutTotalTime <= 0){
                    clearInterval(timer);
                }else{
                    cutTotalTime--;
                    let h = parseInt(cutTotalTime/3600);
                    let m = parseInt(cutTotalTime%3600/60);
                    let s = parseInt(cutTotalTime%60);
                    console.log("时分秒：", h, m, s);
                    let timeText = `${h}时:${m}分:${s}秒`;
                    $(".time"+index).text(timeText);
                }
            }, 1000)
        }

        for(let i = 0; i < data.length; i++){
            let timein = parseInt(data[i].time / 1000);
            cutTime(timein, i);
        }
    </script>
</body>
</html>

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原文地址：https://www.cnblogs.com/muou2125/p/10536615.html