how to get formatted date time like 2009-05-29 21:55:57 using javascript?

Question

when using new Date,I get something like follows:

Fri May 29 2009 22:39:02 GMT+0800 (China Standard Time)

but what I want is xxxx-xx-xx xx:xx:xx formatted time s

Answer 1

What you are looking for is toISOString that will be a part of ECMAScript Fifth Edition. In the meantime you could simply use the toJSON method found in json2.js from json.org.

The portion of interest to you would be:

Date.prototype.toJSON = function (key) {
  function f(n) {
    // Format integers to have at least two digits.
    return n < 10 ? '0' + n : n;
  }
  return this.getUTCFullYear()   + '-' +
       f(this.getUTCMonth() + 1) + '-' +
       f(this.getUTCDate())      + 'T' +
       f(this.getUTCHours())     + ':' +
       f(this.getUTCMinutes())   + ':' +
       f(this.getUTCSeconds())   + 'Z';
};

Answer 2

Just another solution: I was trying to get same format( YYYY-MM-DD HH:MM:SS ) but date.getMonth() was found inaccurate. So I decided to derive the format myself.

This code was deployed early 2015, and it works fine till date.

var m_names =["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];

var d = new Date();
var spl = d.toString().split(' ');
var mnth = parseInt(m_names.indexOf(spl[1])+1).toString();
mnth = (mnth.length == 1) ? '0'+mnth : mnth
        //  yyyy   -   mm   -   dd       hh:mm:ss 
var data = spl[3]+'-'+mnth+'-'+spl[2]+' '+spl[4]
alert(data)

Test the code in JSFIDDLE

Answer 3

The Any+Time(TM) JavaScript Library's AnyTime.Converter object easily converts a JS Date object into ISO or virtually any other format... in fact, the format you want is the default format, so you could simply say:

(new AnyTime.Converter()).format(new Date());

Answer 4

You can use the toJSON() method to get a DateTime style format

var today = new Date().toJSON(); 
// produces something like: 2012-10-29T21:54:07.609Z

From there you can clean it up...

To grab the date and time:

var today = new Date().toJSON().substring(0,19).replace('T',' ');

To grab the just the date:

var today = new Date().toJSON().substring(0,10).replace('T',' ');

To grab just the time:

var today = new Date().toJSON().substring(10,19).replace('T',' ');

Edit: As others have pointed out, this will only work for UTC. Look above for better answers.