以MM：SS格式将秒转换为分钟和秒

问题描述

我想将MM：SS格式的秒转换为分钟和秒。下面的代码工作正常，但将秒转换为M：SS格式。如何将其更改为MM：SS格式。

例如，将150 seconds传递给format(150)时得到2:30，但我需要像02:30

 function format(time) {   
        // Hours,minutes and seconds
        var hrs = ~~(time / 3600);
        var mins = ~~((time % 3600) / 60);
        var secs = ~~time % 60;
    
        // Output like "1:01" or "4:03:59" or "123:03:59"
        var ret = "";
        if (hrs > 0) {
            ret += "" + hrs + ":" + (mins < 10 ? "0" : "");
        }
        ret += "" + mins + ":" + (secs < 10 ? "0" : "");
        ret += "" + secs;
        return ret;
    }

解决方法

您可以将padStart用于min

ret += "" + String(mins).padStart(2,'0') + ":" + (secs < 10 ? "0" : "");

function format(time) {
  // Hours,minutes and seconds
  var hrs = ~~(time / 3600);
  var mins = ~~((time % 3600) / 60);
  var secs = ~~time % 60;

  // Output like "1:01" or "4:03:59" or "123:03:59"
  var ret = "";
  if (hrs > 0) {
      ret += "" + hrs + ":" + (mins < 10 ? "0" : "");
  }
  ret += "" + String(mins).padStart(2,'0') + ":" + (secs < 10 ? "0" : "");
  ret += "" + secs;
  return ret;
}

console.log(format(150))

,

您可以使用此

ret = (hrs>0?("" + hrs + ":"):"") + (mins < 10 ? "0"+mins : mins) + ":" + (secs < 10 ? "0"+secs : secs);

,

请尝试：

ret = (hrs ? hrs + ":" : '') + ("0" + mins).slice(-2) + ":" + ("0" + secs).slice(-2)

Goodluck：D