js倒计时代码

jQuery实现倒计时代码

HTML代码

<form id="form1" runat="server">
    <div id="show">
    </div>
</form>

JS代码

$(function() {
    TimeDown("show", 3600000)
});
/*
 时间倒计时
 TimeDown.js
 */
function TimeDown(id, value) {
    //倒计时的总秒数
    var totalSeconds = parseInt(value / 1000);
    //取模（余数）
    var modulo = totalSeconds % (60 * 60 * 24);
    //小时数
    var hours = Math.floor(modulo / (60 * 60));
    modulo = modulo % (60 * 60);
    //分钟
    var minutes = Math.floor(modulo / 60);
    //秒
    var seconds = modulo % 60;

    hours = hours.toString().length == 1 ? '0' + hours : hours;
    minutes = minutes.toString().length == 1 ? '0' + minutes : minutes;
    seconds = seconds.toString().length == 1 ? '0' + seconds : seconds;

    //输出到页面
    document.getElementById(id).innerHTML = hours + ":" + minutes + ":" + seconds;
    //延迟一秒执行自己
    if (hours == "00" && minutes == "00" && parseInt(seconds) - 1 < 0) {

    } else {
        setTimeout(function() {
            TimeDown(id, value - 1000);
        }, 1000)
    }
}