How to create date in YYYYMMDDHHMMSS format using javascript?

Question

How to create the date in YYYYMMDDHHMMSS format using JavaScript ? For example, I want to get the date as 20131018064838.

I would use the library I suggested [here](http://stackoverflow.com/questions/17734032/date-format-convert-javascript/17734119#17734119) anyway it would help a lot if you share your actual code too. — Adriano Repetti, Oct 18 '13 at 11:23
(new Date()).toISOString().replace(/[^0-9]/g, "").slice(0, -3) — MBS, Aug 14 '17 at 12:47
another solution: `dt=new Date().toISOString().split('.')[0].replace(/[^\d]/gi,'');` sets `dt` to, (for example): `20210809154700` — ashleedawg, Aug 09 '21 at 15:46
With https://github.com/d3/d3-time-format , `timeFormat("%Y-%m-%d %H:%M:%S")(yourDate)` — Eric, Jun 20 '22 at 03:00

score 21 · Answer 1 · edited Jul 26 '21 at 22:11

21

var date = new Date();

alert( date.getFullYear() + ("0" + (date.getMonth() + 1)).slice(-2) + ("0" + date.getDate()).slice(-2) + ("0" + date.getHours() ).slice(-2) + ("0" + date.getMinutes()).slice(-2) + ("0" + date.getSeconds()).slice(-2) );

edit

function pad2(n) { return n < 10 ? '0' + n : n }

var date = new Date();
    
alert( date.getFullYear().toString() + pad2(date.getMonth() + 1) + pad2( date.getDate()) + pad2( date.getHours() ) + pad2( date.getMinutes() ) + pad2( date.getSeconds() ) );

edited Jul 26 '21 at 22:11

alltom

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answered Oct 18 '13 at 11:24

gurvinder372

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neat as the `('0' + n).slice(-2)` hack is, IMHO it's not very readable and the OP would be far better served with a little `pad2` helper function, e.g. `function pad2(n) { return n < 10 ? '0' + n : n }` – Alnitak Oct 18 '13 at 11:25
p.s. and why +1 the `getHours` result?! – Alnitak Oct 18 '13 at 11:26
2

Halfway through line 2 you started using `this` instead of `date`. – Butt4cak3 Oct 18 '13 at 11:27
@Butt4cak3 made changes as per suggestions – gurvinder372 Oct 18 '13 at 11:29
2

@gurvinder372 congrats - you now have the only correct (standalone) answer! – Alnitak Oct 18 '13 at 11:29
@Alnitak thanks for your suggestions & corrections – gurvinder372 Oct 18 '13 at 11:30
@gurvinder372 actually there's one further change required - at least _one_ of the fields (suggest the `year` field) needs to be forced into a string to ensure that you get string concatenation instead of addition. – Alnitak Oct 18 '13 at 11:37
Uncaught SyntaxError: Unexpected token ; The above message is coming – Raheeb M Oct 18 '13 at 11:38
@RaheebM: missing `)` just before, I've edited it. – Qantas 94 Heavy Oct 18 '13 at 12:27
not working: `this.getDate is not a function` – dukevin Mar 31 '17 at 22:33
@KevinDuke check the edit below that. – gurvinder372 Apr 03 '17 at 05:46
I'd do it in a one-liner like `new Date().toISOString().replace(/[^0-9]/gm, "").substr(0,14)`. – Mig82 Oct 04 '19 at 21:47

Alnitak · Answer 2 · 2013-10-19T10:13:06.480

10

Here's my (ES5 safe) method to add the YYYYMMDDHHMMSS() function to any Date object.

On older browsers, either shim Object.defineProperty or just add the inner function directly to Date.prototype:

Object.defineProperty(Date.prototype, 'YYYYMMDDHHMMSS', {
    value: function() {
        function pad2(n) {  // always returns a string
            return (n < 10 ? '0' : '') + n;
        }

        return this.getFullYear() +
               pad2(this.getMonth() + 1) + 
               pad2(this.getDate()) +
               pad2(this.getHours()) +
               pad2(this.getMinutes()) +
               pad2(this.getSeconds());
    }
});

edited Oct 19 '13 at 10:13

answered Oct 18 '13 at 11:56

Alnitak

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9

A bit subjective perhaps, but (assuming timezone being zero UTC offset is fine, ) I think `new Date().toISOString().slice(-24).replace(/\D/g,'').slice(0, 14);` is cleaner since it involves no tinkering with zero-padding or correction of the month number. – StubbornShowaGuy Sep 15 '16 at 05:07

score 6 · Answer 3 · edited Apr 12 '21 at 04:19

6

Please try using prototype method as following.

<script type="text/javascript">

    Date.prototype.YYYYMMDDHHMMSS = function () {
        var yyyy = this.getFullYear().toString();
        var MM = pad(this.getMonth() + 1,2);
        var dd = pad(this.getDate(), 2);
        var hh = pad(this.getHours(), 2);
        var mm = pad(this.getMinutes(), 2)
        var ss = pad(this.getSeconds(), 2)

        return yyyy + MM + dd+  hh + mm + ss;
    };

    function getDate() {
        d = new Date();
        alert(d.YYYYMMDDHHMMSS());
    }

    function pad(number, length) {
        var str = '' + number;
        while (str.length < length) {
            str = '0' + str;
        }
        return str;
    }
</script>

edited Apr 12 '21 at 04:19

masud_moni

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answered Oct 18 '13 at 11:31

mit

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that's a novel (but inefficient) way of zero padding the numbers... You also omitted to zero pad the time fields. – Alnitak Oct 18 '13 at 11:34
1

getting better, but in this case there's no need to pad beyond two digits, and you could then make `pad2` (per the other answer that uses it) an inner function within `Date.prototype.YYYYMMDDHHMMSS` to avoid polluting the global name space. – Alnitak Oct 18 '13 at 11:48
1

thanks for code snippets, I've more customized for debugging purpose. https://jsfiddle.net/trustfarm/nvvzgax1/4/ – cpplover - Slw Essencial Apr 09 '18 at 11:45

How to create date in YYYYMMDDHHMMSS format using javascript?

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