无法使用jQuery获得正确的平均持续时间

如何解决无法使用jQuery获得正确的平均持续时间

我已经创建并记录了日志工具，该工具可以跟踪条目创建日期时间，条目开始日期时间，条目结束日期时间。

如何获取平均值，请参见下面的示例

个人的2个条目，如下所示 00:04:21和00:21:04

我从jquery代码中获得了这些条目

<script>
    
    $(document).ready(function () {
        var pad = function (num) { return ("0" + num).slice(-2); }
        var totalSeconds = 0;
        var reslength = $(".totalColumn").length;

        $(".totalColumn").each(function () {
            var currentDuration = $(this).text();
            currentDuration = currentDuration.split(":");
            var hrs = parseInt(currentDuration[0]);
            var min = parseInt(currentDuration[1]);
            var sec = parseInt(currentDuration[2]);
            var currDurationSec = sec + (60 * min) + (60 * 60 * hrs);
            totalSeconds += currDurationSec;
        });

        
        var hours = Math.floor(totalSeconds / 3600);
        totalSeconds %= 3600;
        var minutes = Math.floor(totalSeconds / 60);
        var seconds = totalSeconds % 60;

        $(".showResTime").text(pad(hours) + ":" + pad(minutes) + ":" + pad(seconds) / reslength);

    });
</script>

使用上述jQuery代码的结果显示为00：25：12.5这是不正确的

如果我们在Excel上计算此结果如下 00:04:21 + 00:21:04 / 2 = 00:23:14这似乎是正确的。

如何使用jquery获得正确的平均值

解决方法

我已经更新了您的代码以生成您想要的东西。发生的事情是，在获得总计秒数之后，您需要除以reslength。

我也不认为您正在正确计算Excel文件的平均时长：

 240 + 21  =  261      (time 1 total seconds)
1260 +  4  = 1264      (time 2 total seconds)
--------------------
1264 + 261 = 1525      (total seconds for both times)

1525 / 2   =  762.5    (average duration in seconds)
762.5      = 12 minutes and 42.5 seconds

$(document).ready(function () {
        var pad = function (num) { return ("0" + num).slice(-2); }
        var totalSeconds = 0;
        var reslength = $(".totalColumn").length;

        $(".totalColumn").each(function () {
            var currentDuration = $(this).text();
            currentDuration = currentDuration.split(":");
            var hrs = parseInt(currentDuration[0]);
            var min = parseInt(currentDuration[1]);
            var sec = parseInt(currentDuration[2]);
            var currDurationSec = sec + (60 * min) + (60 * 60 * hrs);
            totalSeconds += currDurationSec;
        });
        
        totalSeconds = totalSeconds / reslength;
    
        var hours = Math.floor(totalSeconds / 3600);
        totalSeconds %= 3600;
        var minutes = Math.floor(totalSeconds / 60);
        var seconds = totalSeconds % 60;

        $(".showResTime").text(pad(hours) + ":" + pad(minutes) + ":" + Math.ceil(seconds));
    });

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table class="tg">
<tbody>
  <tr>
    <th class="tg-0lax">Time 1</th>
    <td class="totalColumn">00:04:21</td>
  </tr>
  <tr>
    <th class="tg-0lax">Time 2</th>
    <td class="totalColumn">00:21:04</td>
  </tr>
  <tr>
    <th class="tg-0lax">Time 3</th>
    <td class="totalColumn">00:21:03</td>
  </tr>  
</tbody>
</table>


<h1 class="showResTime"></h1>