试试这个



var date1 = new 日期（ 31/08/2014）;
var date2 = new 日期（ 28/08/2014）;
var timeDiff = 数学 .abs（date2.getTime（） - date1.getTime（） ）;
var diffDays = 数学 .ceil（timeDiff /（ 1000 * 3600 * 24 ））;
alert（diffDays）;

试试这个如何计算月和日 [ ^ ]

首先得到你的日子日期然后区别于此。

  var  SecondDate = 新 日期（2014年8月31日）; 
 var  FirstDate =  new  日期（28  -  8  -  2014）; 
 var  SecondDateDay = SecondDate.getDay（）; 
 var  FirstDateDay = FirstDate.getDay（）; 
 var  DayDif = SecondDateDay  -  FirstDateDay 
 alert（DayDif）; 

I Want like these

1st Date=31-Aug-2014(dd-MMM-yyyy)

2nd Date=28-Aug-2014(dd-MMM-yyyy)

DayDiff= (2nd Date - 1st Date)

Ans = 3

Try use this

var date1 = new Date("31/08/2014");
var date2 = new Date("28/08/2014");
var timeDiff = Math.abs(date2.getTime() - date1.getTime());
var diffDays = Math.ceil(timeDiff / (1000 * 3600 * 24)); 
alert(diffDays)​;

try this How to calucate months and Days[^]

First get Days from Your Dates and then take difference of that.

var SecondDate = new Date(31-Aug-2014);
var FirstDate = new Date(28-Aug-2014);
var SecondDateDay = SecondDate.getDay();
var FirstDateDay = FirstDate.getDay();
var DayDif = SecondDateDay - FirstDateDay
alert(DayDif);