php - javascript长度持续时间

Question

我在 php 中有以下函数，我如何在 javascript 中转换它？

 function length_duration ($seconds)
 {
  $hours = $mins = $sec = NULL;

  //for seconds
  if($seconds > 0)
   $sec = ($seconds % 60 < 10) ? "0".($seconds%60) : ($seconds%60);

  //for mins
  if($seconds > 60)
   $mins  = (($seconds/60%60)<10) ? "0".($seconds/60%60).":" : "".($seconds/60%60).":";

  //for hours
  if($seconds/60 > 60)
   $hours = (($seconds/60/60) < 10) ? "0".($seconds/60/60).":" : "".($seconds/60/60).":";

  return $hours.$mins.$sec;
 }

Answer 1

主要删除 $，替换 .用+，用var声明变量，用~~来处理javascript处理小数的搞笑方式

演示:http://jsfiddle.net/kR4Pz/1/

function length_duration (seconds)
 {
  var hours = '', mins = '', sec = '';

  //for seconds
  if(seconds > 0)
   sec = (seconds % 60 < 10) ? "0"+(seconds%60) : ""+(seconds%60);

  //for mins
  if(seconds >= 60)
   mins  = ~~(((seconds/60)%60)<10) ? "0"+~~((seconds/60)%60)+":" : ""+~~((seconds/60)%60)+":";

  //for hours
  if(seconds/60 >= 60)
   hours = ~~(((seconds/60)/60) < 10) ? "0"+~~((seconds/60)/60)+":" : ""+~~((seconds/60)/60)+":";

  return hours+mins+sec;
 }