JavaScript date.format is not a function

Question

I am using this piece of code to get string representing date yyyy-mm-dd from a hidden field and then format it as needed:

var date_string = $('#end-date').val();
var splitDate = date_string.split("-");
var end_date = new Date(splitDate[0], splitDate[1] - 1, splitDate[2]);
end_date.format("dddd, mmmm dS, yyyy")

But it throws an error:

end_date.format is not a function

Why does it happen and how to solve this issue?

Possible duplicate? http://stackoverflow.com/questions/1056728/formatting-a-date-in-javascript — , Feb 03 '12 at 17:39

Paul · Accepted Answer · 2014-05-24T18:12:26.777

22

That is because .format is not a native JavaScript function on Date.prototype.

You need to add a lib like this one: http://jacwright.com/projects/javascript/date_format/

I personally use http://momentjs.com/ to manage dates in JavaScript

edited May 24 '14 at 18:12

answered Feb 03 '12 at 17:39

Paul

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score 1 · Answer 2 · edited May 23 '17 at 12:34

1

You get this error because Date.prototype.format just does not exist (I am wondering why you think it does).

See this question about solutions how to format dates.

edited May 23 '17 at 12:34

Community

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answered Feb 03 '12 at 17:39

Felix Kling

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JavaScript date.format is not a function

2 Answers2