With MomentJS, if necessary I can set a locale on a specific moment instance (rather than globally) using .locale (or .lang in older versions). How can I parse a string using a specific locale other than the global one? Since the moment function itself is what we use for parsing, and there doesn't seem to be a .set variant that does full parsing?

E.g.:

// Assume the default locale is 'en' (just in case, I'll set it for the snippet)
moment.locale('en');

// I have this string that's in the French locale
var str = "30 Avril 2015";

// Parsing it fails
var m = moment(str, "DD MMMM YYYY");
snippet.log(m.format("YYYY-MM-DD")); // "Invalid Date"

<script src=".js/2.9.0/moment-with-locales.js"></script>
<!-- Script provides the `snippet` object, see  -->
<script src=".js"></script>

With MomentJS, if necessary I can set a locale on a specific moment instance (rather than globally) using .locale (or .lang in older versions). How can I parse a string using a specific locale other than the global one? Since the moment function itself is what we use for parsing, and there doesn't seem to be a .set variant that does full parsing?

E.g.:

// Assume the default locale is 'en' (just in case, I'll set it for the snippet)
moment.locale('en');

// I have this string that's in the French locale
var str = "30 Avril 2015";

// Parsing it fails
var m = moment(str, "DD MMMM YYYY");
snippet.log(m.format("YYYY-MM-DD")); // "Invalid Date"

<script src="https://cdnjs.cloudflare./ajax/libs/moment.js/2.9.0/moment-with-locales.js"></script>
<!-- Script provides the `snippet` object, see http://meta.stackexchange./a/242144/134069 -->
<script src="http://tjcrowder.github.io/simple-snippets-console/snippet.js"></script>

• javascript
• momentjs

Share Improve this question Follow edited Apr 3, 2015 at 15:23 T.J. Crowder asked Apr 3, 2015 at 15:18 T.J. CrowderT.J. Crowder 1.1m200200 gold badges2k2k silver badges2k2k bronze badges 4

• 1 I posted it as it might be useful to someone anyway? I think I get what you want, you want some sort of "scope" where you can work on french dates for instance, without messing with the global locale. – adeneo Commented Apr 3, 2015 at 15:35
• @adeneo: Agreed. And yes, that's what I want. I'll post it separately. – T.J. Crowder Commented Apr 3, 2015 at 15:37
• You'd think there was a way to do that, but I can't remember ever seeing something like that? The documentation is rather extensive and I haven't read all of it, but I can't spot anything that would work like that, and you've probably looked as well. Could one perhaps extend moment to have a set() method on an instance or something like that ? – adeneo Commented Apr 3, 2015 at 15:40
• @adeneo: FYI, I've posted the question. – T.J. Crowder Commented Apr 3, 2015 at 15:41

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1 Answer 1

Sorted by: Reset to default 6

As of version 2.0.0, a locale key can be passed as the third parameter to moment() and moment.utc()

// Assume the default locale is 'en' (just in case, I'll set it for the snippet)
moment.locale('en');

// I have this string that's in the French locale
var str = "30 Avril 2015";

// Parse it in 'fr'
var m = moment(str, "DD MMMM YYYY", "fr");

// Check result:
snippet.log(m.format("YYYY-MM-DD -- MMMM"));

// Check global locale
var locale = moment()._locale._abbr;
snippet.log('Locale : ' + locale);

<script src="https://cdnjs.cloudflare./ajax/libs/moment.js/2.9.0/moment-with-locales.js"></script>
<!-- Script provides the `snippet` object, see http://meta.stackexchange./a/242144/134069 -->
<script src="http://tjcrowder.github.io/simple-snippets-console/snippet.js"></script>