compare dates which gives me wrong result

Question

I need to compare the startDate and endDate and if startDate>endDate then i need to take the starting date of the month of endDate as startDate suppose my startDate is "startDate": "2016-05-30T00:00:00.000Z" endDate is "endDate": "2016-06-05T00:00:00.000Z" then when compare need to get true but i am getting false

Code:

 var c=(new Date(nestedObj.startDate)).getDate();
  console.log("startdate"+" "+c);
  var d=(new Date(nestedObj.endDate)).getDate();
  console.log("endtdate"+" "+d);
  console.log(c>d);

As you can see in the below snippet

Any help would be appreciated.

Well, you are only comparing days, but the endDate is indeed larger than the startDate (is one month later) — XCS, Sep 27 '16 at 15:26
getDate() returns day integer 1..31 hence 30 is larger then 5. You need to compare Date objects. — TSV, Sep 27 '16 at 15:26
Take a look at this thread: http://stackoverflow.com/questions/492994/compare-two-dates-with-javascript#answer-493018 — t3__rry, Sep 27 '16 at 15:27
looks like a duplicate of http://stackoverflow.com/questions/492994/compare-two-dates-with-javascript#answer-493018 — TSV, Sep 27 '16 at 15:29

score 2 · Accepted Answer · answered Sep 27 '16 at 15:27

2

try this

var c = new Date(nestedObj.startDate)
console.log("startdate"+" "+c);
var d=new Date(nestedObj.endDate);
console.log("endtdate"+" "+d);
console.log(c>d);

answered Sep 27 '16 at 15:27

Piotr Białek

2,569
1
17
26

again the same thing I am again getting wrong result – Shikha thakur Sep 27 '16 at 15:41
1

@Shikhathakur You are not, your start date is always earlier than the end date, look at the month. – XCS Sep 27 '16 at 15:52

score 1 · Answer 2 · answered Sep 27 '16 at 15:31

You should use getTime() function rather than getDate(). getTime() return number(epoch time) that will easy to compare. Here is code that may help you

var c = new Date(nestedObj.startDate).getTime();
console.log("startdate " + c);
var d = new Date(nestedObj.endDate).getTime();
console.log("endtdate " + d);
console.log(c>d);

Even you can directly compare Date object as following

var c = new Date(nestedObj.startDate);
console.log("startdate " + c);
var d = new Date(nestedObj.endDate);
console.log("endtdate " + d);
console.log(c>d);

when i do typeof(c) and type(d) then i am getting a number . so i think that should not give me false — Shikha thakur, Sep 27 '16 at 15:41

score 1 · Answer 3 · answered Sep 27 '16 at 16:40

1

Why not going with moment.js

Look at moment(date1).isAfter(date2); method.

It's easy to do all manipulation of Date/Time

if(moment(endDate).isAfter(startDate)){
//Do whatever you want
}

answered Sep 27 '16 at 16:40

abdulbarik

6,101
5
38
59

compare dates which gives me wrong result

3 Answers3