convert string to Date Javascript

Question

Trying to convert a string to Javascript Date. My string:

var fullDate = this.date + " " + this.time + ":00";

gives an output: 24/12/2016 02:00:00

but trying to convert it in js Date object like:

 var k = new Date(fullDate);

gives the output: Invalid Date

or even: var k = Date.parse(fullDate);

gives the output: NaN

Any help is welcome.

I was following instructions from http://www.datejs.com/ so far

Your date/time format is probably not matching your locale's format, and is not ISO... it should be either of those. — daniel.gindi, Dec 13 '16 at 14:10
I don't know what the guidance on datejs.com says, but try reading some reliable documentation on this (e.g. https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Date) and checking what date formats are understood by the date constructor, it's not actually that many. Other libraries like MomentJS can parse dates in a wider variety of formats. — ADyson, Dec 13 '16 at 14:13
This is a good summary for this issue actually: http://stackoverflow.com/questions/3257460/new-date-is-working-in-chrome-but-not-firefox/3257513#3257513 — ADyson, Dec 13 '16 at 14:15

score 5 · Answer 1 · answered Dec 13 '16 at 14:15

5

Your format is invalid. Valid format is month/day/year, so try:

var fullDate = "12/24/2016 02:00:00";
var k = new Date(fullDate);

Hope I could help!

answered Dec 13 '16 at 14:15

Sebastian Kaczmarek

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if the string contains miniseconds,how to convert? – Dolphin Jun 19 '19 at 08:33

score 4 · Answer 2 · edited May 23 '17 at 10:30

4

I've just posted an answer/question for this. Here's my answer

In summary you need to format the string to a standardized format first and then you can use that string with the new Date(string) method. This work for many browsers (IE9+, Chrome and Firefox).

stringFormat = moment(dateObject).format("YYYY-MM-DDTHH:mm:ss");
date = new Date(stringFormat);

edited May 23 '17 at 10:30

Community

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answered Dec 13 '16 at 14:14

Andres Elizondo

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Ionut Necula · Answer 3 · 2016-12-13T14:37:44.223

That's happening because you don't provide a valid date format for the new Date. So the date format is incorrect. The default date format in JavaScript is dd/mm/yyyy.

The date should be like(mm/dd/yyyy):

12/24/2015

And then you can use var k = new Date(fullDate);

A pure javascript solution to format the date(without moment.js):

var fullDate = "24/12/2016 02:00:00";
fullDate = fullDate.split(' ');

var date = fullDate[0].split(/\//);
var time = fullDate[1];

var newDate = date[1] + '/' + date[0] + '/' + date[2] + ' ' + time;
var k = new Date(newDate);

convert string to Date Javascript

3 Answers3