同一页面上的多个JavaScript倒计时

Question

嗨，我正在尝试将多个JavaScript倒计时添加到单个html页面。 我在下面包含了.js文件。 现在，我的页面仅显示第一个倒计时。

function cdtd () {
    var end = new Date("December 25, 2013 00:01:00");
    var start = new Date();
    var timeDiff = end.getTime() - start.getTime();
    if (timeDiff <= 0) {
        clearTimeout (timer);
        document.write("Deal Ended");
    }
    var seconds = Math.floor(timeDiff / 1000);
    var minutes = Math.floor(seconds / 60);
    var hours = Math.floor(minutes / 60);
    var days = Math.floor(hours / 24);
    hours %= 24;
    minutes %= 60;
    seconds %=60;

    document.getElementById("daysBox").innerHTML = days;
    document.getElementById("hoursBox").innerHTML = hours;
    document.getElementById("minsBox").innerHTML = minutes;
    document.getElementById("secsBox").innerHTML = seconds;

    var timer = setTimeout('cdtd()',1000);

}

function countdown () {
    var end = new Date("May 31, 2013 00:01:00");
    var start = new Date();
    var timeDiff = end.getTime() - start.getTime();
    if (timeDiff <= 0) {
        clearTimeout (timer);
        document.write("Deal Ended");
    }
    var seconds = Math.floor(timeDiff / 1000);
    var minutes = Math.floor(seconds / 60);
    var hours = Math.floor(minutes / 60);
    var days = Math.floor(hours / 24);
    hours %= 24;
    minutes %= 60;
    seconds %=60;

    document.getElementById("daysBox").innerHTML = days;
    document.getElementById("hoursBox").innerHTML = hours;
    document.getElementById("minsBox").innerHTML = minutes;
    document.getElementById("secsBox").innerHTML = seconds;

    var timer = setTimeout('countdown()',1000);

}

function cdtd3 () {
    var end = new Date("December 25, 2013 00:01:00");
    var start = new Date();
    var timeDiff = end.getTime() - start.getTime();
    if (timeDiff <= 0) {
        clearTimeout (timer);
        document.write("Deal Ended");
    }
    var seconds = Math.floor(timeDiff / 1000);
    var minutes = Math.floor(seconds / 60);
    var hours = Math.floor(minutes / 60);
    var days = Math.floor(hours / 24);
    hours %= 24;
    minutes %= 60;
    seconds %=60;

    document.getElementById("daysBox").innerHTML = days;
    document.getElementById("hoursBox").innerHTML = hours;
    document.getElementById("minsBox").innerHTML = minutes;
    document.getElementById("secsBox").innerHTML = seconds;

    var timer = setTimeout('cdtd3()',1000);

}

function cdtd4 () {
    var end = new Date("December 25, 2013 00:01:00");
    var start = new Date();
    var timeDiff = end.getTime() - start.getTime();
    if (timeDiff <= 0) {
        clearTimeout (timer);
        document.write("Deal Ended");
    }
    var seconds = Math.floor(timeDiff / 1000);
    var minutes = Math.floor(seconds / 60);
    var hours = Math.floor(minutes / 60);
    var days = Math.floor(hours / 24);
    hours %= 24;
    minutes %= 60;
    seconds %=60;

    document.getElementById("daysBox").innerHTML = days;
    document.getElementById("hoursBox").innerHTML = hours;
    document.getElementById("minsBox").innerHTML = minutes;
    document.getElementById("secsBox").innerHTML = seconds;

    var timer = setTimeout('cdtd4()',1000);

}

function cdtd5 () {
    var end = new Date("December 25, 2013 00:01:00");
    var start = new Date();
    var timeDiff = end.getTime() - start.getTime();
    if (timeDiff <= 0) {
        clearTimeout (timer);
        document.write("Deal Ended");
    }
    var seconds = Math.floor(timeDiff / 1000);
    var minutes = Math.floor(seconds / 60);
    var hours = Math.floor(minutes / 60);
    var days = Math.floor(hours / 24);
    hours %= 24;
    minutes %= 60;
    seconds %=60;

    document.getElementById("daysBox").innerHTML = days;
    document.getElementById("hoursBox").innerHTML = hours;
    document.getElementById("minsBox").innerHTML = minutes;
    document.getElementById("secsBox").innerHTML = seconds;

    var timer = setTimeout('cdtd5()',1000);

}

function cdtd6 () {
    var end = new Date("December 25, 2013 00:01:00");
    var start = new Date();
    var timeDiff = end.getTime() - start.getTime();
    if (timeDiff <= 0) {
        clearTimeout (timer);
        document.write("Deal Ended");
    }
    var seconds = Math.floor(timeDiff / 1000);
    var minutes = Math.floor(seconds / 60);
    var hours = Math.floor(minutes / 60);
    var days = Math.floor(hours / 24);
    hours %= 24;
    minutes %= 60;
    seconds %=60;

    document.getElementById("daysBox").innerHTML = days;
    document.getElementById("hoursBox").innerHTML = hours;
    document.getElementById("minsBox").innerHTML = minutes;
    document.getElementById("secsBox").innerHTML = seconds;

    var timer = setTimeout('cdtd6()',1000);

}

Answer 1

您需要在此处解决几个问题：

1. 每个倒数计时器在存储时间字符串时都使用相同的元素ID。 这就是为什么其中只有一个出现的原因。

2. 如果您的任何倒计时达到零，则document.write()调用将擦除整个页面。

3. 反复重复该代码。 这应该是您所有倒数计时的一项常用功能。 （如果您需要再添加一个呢？又十个呢？）

4. 尽管可以使用多个计时器，但您不需要它们。 运行一个计时器，并从中更新所有显示的时间。

5. 调用setInterval() ，最好将函数引用作为第一个参数而不是字符串。

思考一下这些想法，看看可以做什么，然后用新代码报告。 :-)

Answer 2

现在，您每次调用该函数时都引用一个覆盖每个值的框。

您要使用查询选择器而不是getElementById。

这是一个使用jQuery的简单示例：

var cdtd = function(id,end) {
    var start = new Date();
    var timeDiff = end.getTime() - start.getTime();
    if (timeDiff <= 0) {
            clearTimeout (timer);
            document.write("Deal Ended");
    }

    var seconds = Math.floor(timeDiff / 1000);
    var minutes = Math.floor(seconds / 60);
    var hours = Math.floor(minutes / 60);
    var days = Math.floor(hours / 24);
    hours %= 24;
    minutes %= 60;
    seconds %= 60;
    $( id + " .days").html(days);
    $( id + " .hours").html(hours);
    $( id + " .minutes").html( minutes);
    $( id + " .seconds").html( seconds );
    console.log(id + " .hoursBox",$( id + " .hoursBox").length,id,end,hours,minutes,seconds)
    var timer = setTimeout(function(){cdtd(id,end)},1000);
}
cdtd("#counter1",new Date("December 25, 2014 00:01:00"));
cdtd("#counter2",new Date("October 31, 2014 00:01:00"));
cdtd("#counter3",new Date("January 1, 2014 00:01:00"));

http://plnkr.co/8LrtWvfGnZWyRYl2RlWd

Answer 3

@Shanimal im在我的网站上使用了此代码，问题是当计时器达到0000时它会转到另一页并显示交易结束。我想要的是，当计时器达到0000时它必须在特定div的同一页上显示消息。我去过另一页。我已经尝试过删除if（timeDiff <= 0）{clearTimeout（timer）; document.write（“交易结束”）; }

即使达到0000也不会显示任何消息，它会从-1-1 -1 -1重新开始计数