Convert DD-MM-YYYY to YYYY-MM-DD format using Javascript

Question

I'm trying to convert date format (DD-MM-YYYY) to (YYYY-MM-DD).i use this javascript code.it's doesn't work.

 function calbill()
    {
    var edate=document.getElementById("edate").value; //03-11-2014

    var myDate = new Date(edate);
    console.log(myDate);
    var d = myDate.getDate();
    var m =  myDate.getMonth();
    m += 1;  
    var y = myDate.getFullYear();

        var newdate=(y+ "-" + m + "-" + d);

alert (""+newdate); //It's display "NaN-NaN-NaN"
    }

Do not rely on what `Date` constructor will parse. Never. Seriously. Don't do it. Also read [this](http://stackoverflow.com/a/25865621/1207195) and check some other linked posts. — Adriano Repetti, Nov 23 '14 at 08:49
Ok, what does "it doesn't work" mean? What does it do instead? — JJJ, Nov 23 '14 at 08:50
@Juhana when i add "alert (""+newdate);".it's Display "NaN-NaN-NaN" — KT1, Nov 23 '14 at 08:59

Ehsan · Accepted Answer · 2014-11-23T09:05:03.287

100

This should do the magic

var date = "03-11-2014";
var newdate = date.split("-").reverse().join("-");

edited Nov 23 '14 at 09:05

answered Nov 23 '14 at 08:51

Ehsan

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It's come like this 03-11-2014.I want to convert it to 2014-11-03. – KT1 Nov 23 '14 at 09:04
If it is your answer please consider accepting the answer, by clicking on the hallow check mark, thanks :) – Ehsan Nov 23 '14 at 09:07
1

Just the simplicity I was looking for! – Borjovsky Nov 08 '18 at 11:15

score 3 · Answer 2 · answered Nov 23 '14 at 08:50

Don't use the Date constructor to parse strings, it's extremely unreliable. If you just want to reformat a DD-MM-YYYY string to YYYY-MM-DD then just do that:

function reformatDateString(s) {
  var b = s.split(/\D/);
  return b.reverse().join('-');
}

console.log(reformatDateString('25-12-2014')); // 2014-12-25

score 1 · Answer 3 · edited Sep 25 '18 at 02:01

1

You can use the following to convert DD-MM-YYYY to YYYY-MM-DD format using JavaScript:

var date = "24/09/2018";
date = date.split("/").reverse().join("/");

var date2 = "24-09-2018";
date2 = date.split("-").reverse().join("-");

console.log(date); //print "2018/09/24"
console.log(date2); //print "2018-09-24"

edited Sep 25 '18 at 02:01

Grant Miller

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answered Sep 24 '18 at 20:54

Guilherme Rodrigues

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Hi, welcome to StackOverflow. Please clarify the difference between this and the accepted answer. Thank you. – MandyShaw Sep 24 '18 at 21:12
For date2, it should be as date2 = date2.split("-").reverse().join("-"); – ankit.jbp Aug 30 '22 at 06:13

score 0 · Answer 4 · answered Nov 23 '14 at 08:50

You just need to use return newdate:

function calbill()
{
var edate=document.getElementById("edate").value;

var myDate = new Date(edate);
console.log(myDate);
var d = myDate.getDate();
var m =  myDate.getMonth();
m += 1;  
var y = myDate.getFullYear();

    var newdate=(y+ "-" + m + "-" + d);
  return newdate;
}

demo

But I would simply recommend you to use like @Ehsan answered for you.

Rinku Choudhary · Answer 5 · 2020-11-27T07:08:01.400

-1

First yo have to add a moment js cdn which is easily available at here

then follow this code

moment(moment('13-01-2020', 'DD-MM-YYYY')).format('YYYY-MM-DD');
// will return 2020-01-13

edited Nov 27 '20 at 07:08

answered Jan 08 '20 at 12:26

Rinku Choudhary

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This requires an external library. There's no mention of that. There's also no explanation. This answer is unconsidered "unhelpful" on stackoverflow. – Onimusha Nov 22 '20 at 18:08

Convert DD-MM-YYYY to YYYY-MM-DD format using Javascript

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