使用格式hh：mm：ss的JavaScript秒到时间字符串 [英] JavaScript seconds to time string with format hh:mm:ss

问题描述

我想转换一段时间，即以冒号分隔时间字符串的秒数（hh：mm：ss）

I want to convert a duration of time, i.e., number of seconds to colon-separated time string (hh:mm:ss)

我找到了一些有用的答案这里，但他们都谈到转换为x小时和x分钟格式。

I found some useful answers here but they all talk about converting to x hours and x minutes format.

那么有一个小小的片段在jQuery或原始JavaScript中执行此操作吗？

So is there a tiny snippet that does this in jQuery or just raw JavaScript?

推荐答案

String.prototype.toHHMMSS = function () {
    var sec_num = parseInt(this, 10); // don't forget the second param
    var hours   = Math.floor(sec_num / 3600);
    var minutes = Math.floor((sec_num - (hours * 3600)) / 60);
    var seconds = sec_num - (hours * 3600) - (minutes * 60);

    if (hours   < 10) {hours   = "0"+hours;}
    if (minutes < 10) {minutes = "0"+minutes;}
    if (seconds < 10) {seconds = "0"+seconds;}
    return hours+':'+minutes+':'+seconds;
}

您现在可以使用它：

alert("5678".toHHMMSS());

工作片段：

String.prototype.toHHMMSS = function () {
    var sec_num = parseInt(this, 10); // don't forget the second param
    var hours   = Math.floor(sec_num / 3600);
    var minutes = Math.floor((sec_num - (hours * 3600)) / 60);
    var seconds = sec_num - (hours * 3600) - (minutes * 60);

    if (hours   < 10) {hours   = "0"+hours;}
    if (minutes < 10) {minutes = "0"+minutes;}
    if (seconds < 10) {seconds = "0"+seconds;}
    return hours + ':' + minutes + ':' + seconds;
}
    
console.log("5678".toHHMMSS());

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