Javascript date parse error?

Question

  let date = new Date("2017-09-12T12:00:00");
  console.log(date.getUTCMonth());

Here I am expecting it would log 09 for a month but it's logging 08. Year, day , hour and minute gets parsed correctly though. what's going on here? How can I extract 09 from the above date string?

Javascript month start with 0 which mean January is 0, February is 1, so on. So, you have to add 1 to date.getUTCMonth(). — Hassan Imam, Sep 12 '17 at 03:52
You should not be using *getUTCMonth*. The string (if parsed correctly) will be treated as local, not UTC, so *getUTCMonth* may return a different month to *getMonth* unless the host timezone offset is +00:00. — RobG, Sep 13 '17 at 08:00

score 3 · Accepted Answer · edited Sep 12 '17 at 04:36

3

The getUTCMonth() is a zero-based value — zero is January.

For more info: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getUTCMonth

edited Sep 12 '17 at 04:36

Albert Einstein

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answered Sep 12 '17 at 03:52

Mark

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score 3 · Answer 2 · edited Sep 12 '17 at 04:32

3

date.getUTCMonth() method returns the month (from 0 to 11) for the specified date.

So to get what you expect, you should add 1.

edited Sep 12 '17 at 04:32

Albert Einstein

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answered Sep 12 '17 at 03:53

meisen99

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score 2 · Answer 3 · answered Sep 12 '17 at 03:54

Months are 0-indexed in Javascript.

var date = new Date(date),
    month = '' + (date.getMonth() + 1),
    day = '' + date.getDate(),
    year = date.getFullYear();

For a quick example is how you would format it if you wanted to format it in a YYYY - MM - DD format.

Javascript date parse error?

3 Answers3