javascript計算兩個日期相差的天數

在實際應用中可能需要計算書兩個日期之間它們相差的天數。

程式碼例項如下:

[JavaScript] 純文字檢視 複製程式碼
//+--------------------------------------------------- 
//| 求兩個時間的天數差 日期格式為 YYYY-MM-dd  
//+--------------------------------------------------- 
function daysBetween(DateOne,DateTwo){  
  var OneMonth = DateOne.substring(5,DateOne.lastIndexOf ('-')); 
  var OneDay = DateOne.substring(DateOne.length,DateOne.lastIndexOf ('-')+1); 
  var OneYear = DateOne.substring(0,DateOne.indexOf ('-')); 
   
  var TwoMonth = DateTwo.substring(5,DateTwo.lastIndexOf ('-')); 
  var TwoDay = DateTwo.substring(DateTwo.length,DateTwo.lastIndexOf ('-')+1); 
  var TwoYear = DateTwo.substring(0,DateTwo.indexOf ('-')); 
   
  var cha=((Date.parse(OneMonth+'/'+OneDay+'/'+OneYear)- Date.parse(TwoMonth+'/'+TwoDay+'/'+TwoYear))/86400000);  
  return Math.abs(cha); 
} 
console.log(daysBetween("2014-10-5","2015-11-5"));