JavaScript date from string?

Question

Novice question. I've got a string in the following format:

var dateStr = '2012-4-14';

I want to make it into a JavaScript Date object. The following creates a Date object in Chrome, but is NaN in IE8:

var myDate = new Date(dateStr);

What should I be doing differently - should I split the string?

Thanks!

Michael Robinson · Accepted Answer · 2012-07-25 20:46:50Z

3

Try splitting your date string into year, month, day and instantiating your date differently.

var rawDate = '2012-4-14'.split('-');

var myDate = new Date(rawDate[0], rawDate[1]-1, rawDate[2]);

Note that this will only work if you can guarantee that your date string will be of the same format each time.

answered Jul 25, 2012 at 20:46

Michael Robinson

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2 Comments

user1106925 Over a year ago

Don't forget that months are 0 based in JavaScript, so you should subtract 1 from the month if April is desired..

Michael Robinson Over a year ago

@amnotiam I can't believe I missed that! Considering that this bit me in the *** just the other day.

Community · Accepted Answer · 2017-05-23 11:44:05Z

2

There's a Date.parse in javascript, it recognizes various date formats, see the MDN page for details. For ISO 8601 dates (yours seem to be this one) you can use this library.

This answer also could prove itself useful: Why does Date.parse give incorrect results?

edited May 23, 2017 at 11:44

CommunityBot

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answered Jul 25, 2012 at 20:46

complex857

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Comments

j08691 · Accepted Answer · 2012-07-25 20:48:05Z

0

Change var dateStr = '2012-4-14'; to var dateStr = '2012/4/14';

answered Jul 25, 2012 at 20:48

j08691

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