Javascript - Get The Complete List Of Locales Supported By The Browser

I've found supportedLocalesOf, but is there a way to get all supported locales, not just check which among a given list are supported? The '*' tag option described in this 2012 pos

Solution 1:

You may use npm ISO-639-1 to list them. It's safe to assume that all browsers use the 639-1 column shown in this table from wikipedia as their standard support.

Or use the following hardcoded list

[
    ['Abkhazian', 'ab'],
    ['Afar', 'aa'],
    ['Afrikaans', 'af'],
    ['Akan', 'ak'],
    ['Albanian', 'sq'],
    ['Amharic', 'am'],
    ['Arabic', 'ar'],
    ['Aragonese', 'an'],
    ['Armenian', 'hy'],
    ['Assamese', 'as'],
    ['Avaric', 'av'],
    ['Avestan', 'ae'],
    ['Aymara', 'ay'],
    ['Azerbaijani', 'az'],
    ['Bambara', 'bm'],
    ['Bashkir', 'ba'],
    ['Basque', 'eu'],
    ['Belarusian', 'be'],
    ['Bengali (Bangla)', 'bn'],
    ['Bihari', 'bh'],
    ['Bislama', 'bi'],
    ['Bosnian', 'bs'],
    ['Breton', 'br'],
    ['Bulgarian', 'bg'],
    ['Burmese', 'my'],
    ['Catalan', 'ca'],
    ['Chamorro', 'ch'],
    ['Chechen', 'ce'],
    ['Chichewa, Chewa, Nyanja', 'ny'],
    ['Chinese', 'zh'],
    ['Chinese (Simplified)', 'zh-Hans'],
    ['Chinese (Traditional)', 'zh-Hant'],
    ['Chuvash', 'cv'],
    ['Cornish', 'kw'],
    ['Corsican', 'co'],
    ['Cree', 'cr'],
    ['Croatian', 'hr'],
    ['Czech', 'cs'],
    ['Danish', 'da'],
    ['Divehi, Dhivehi, Maldivian', 'dv'],
    ['Dutch', 'nl'],
    ['Dzongkha', 'dz'],
    ['English', 'en'],
    ['Esperanto', 'eo'],
    ['Estonian', 'et'],
    ['Ewe', 'ee'],
    ['Faroese', 'fo'],
    ['Fijian', 'fj'],
    ['Finnish', 'fi'],
    ['French', 'fr'],
    ['Fula, Fulah, Pulaar, Pular', 'ff'],
    ['Galician', 'gl'],
    ['Gaelic (Scottish)', 'gd'],
    ['Gaelic (Manx)', 'gv'],
    ['Georgian', 'ka'],
    ['German', 'de'],
    ['Greek', 'el'],
    ['Greenlandic', 'kl'],
    ['Guarani', 'gn'],
    ['Gujarati', 'gu'],
    ['Haitian Creole', 'ht'],
    ['Hausa', 'ha'],
    ['Hebrew', 'he'],
    ['Herero', 'hz'],
    ['Hindi', 'hi'],
    ['Hiri Motu', 'ho'],
    ['Hungarian', 'hu'],
    ['Icelandic', 'is'],
    ['Ido', 'io'],
    ['Igbo', 'ig'],
    ['Indonesian', 'id, in'],
    ['Interlingua', 'ia'],
    ['Interlingue', 'ie'],
    ['Inuktitut', 'iu'],
    ['Inupiak', 'ik'],
    ['Irish', 'ga'],
    ['Italian', 'it'],
    ['Japanese', 'ja'],
    ['Javanese', 'jv'],
    ['Kalaallisut, Greenlandic', 'kl'],
    ['Kannada', 'kn'],
    ['Kanuri', 'kr'],
    ['Kashmiri', 'ks'],
    ['Kazakh', 'kk'],
    ['Khmer', 'km'],
    ['Kikuyu', 'ki'],
    ['Kinyarwanda (Rwanda)', 'rw'],
    ['Kirundi', 'rn'],
    ['Kyrgyz', 'ky'],
    ['Komi', 'kv'],
    ['Kongo', 'kg'],
    ['Korean', 'ko'],
    ['Kurdish', 'ku'],
    ['Kwanyama', 'kj'],
    ['Lao', 'lo'],
    ['Latin', 'la'],
    ['Latvian (Lettish)', 'lv'],
    ['Limburgish ( Limburger)', 'li'],
    ['Lingala', 'ln'],
    ['Lithuanian', 'lt'],
    ['Luga-Katanga', 'lu'],
    ['Luganda, Ganda', 'lg'],
    ['Luxembourgish', 'lb'],
    ['Manx', 'gv'],
    ['Macedonian', 'mk'],
    ['Malagasy', 'mg'],
    ['Malay', 'ms'],
    ['Malayalam', 'ml'],
    ['Maltese', 'mt'],
    ['Maori', 'mi'],
    ['Marathi', 'mr'],
    ['Marshallese', 'mh'],
    ['Moldavian', 'mo'],
    ['Mongolian', 'mn'],
    ['Nauru', 'na'],
    ['Navajo', 'nv'],
    ['Ndonga', 'ng'],
    ['Northern Ndebele', 'nd'],
    ['Nepali', 'ne'],
    ['Norwegian', 'no'],
    ['Norwegian bokmål', 'nb'],
    ['Norwegian nynorsk', 'nn'],
    ['Nuosu', 'ii'],
    ['Occitan', 'oc'],
    ['Ojibwe', 'oj'],
    ['Old Church Slavonic, Old Bulgarian', 'cu'],
    ['Oriya', 'or'],
    ['Oromo (Afaan Oromo)', 'om'],
    ['Ossetian', 'os'],
    ['Pāli', 'pi'],
    ['Pashto, Pushto', 'ps'],
    ['Persian (Farsi)', 'fa'],
    ['Polish', 'pl'],
    ['Portuguese', 'pt'],
    ['Punjabi (Eastern)', 'pa'],
    ['Quechua', 'qu'],
    ['Romansh', 'rm'],
    ['Romanian', 'ro'],
    ['Russian', 'ru'],
    ['Sami', 'se'],
    ['Samoan', 'sm'],
    ['Sango', 'sg'],
    ['Sanskrit', 'sa'],
    ['Serbian', 'sr'],
    ['Serbo-Croatian', 'sh'],
    ['Sesotho', 'st'],
    ['Setswana', 'tn'],
    ['Shona', 'sn'],
    ['Sichuan Yi', 'ii'],
    ['Sindhi', 'sd'],
    ['Sinhalese', 'si'],
    ['Siswati', 'ss'],
    ['Slovak', 'sk'],
    ['Slovenian', 'sl'],
    ['Somali', 'so'],
    ['Southern Ndebele', 'nr'],
    ['Spanish', 'es'],
    ['Sundanese', 'su'],
    ['Swahili (Kiswahili)', 'sw'],
    ['Swati', 'ss'],
    ['Swedish', 'sv'],
    ['Tagalog', 'tl'],
    ['Tahitian', 'ty'],
    ['Tajik', 'tg'],
    ['Tamil', 'ta'],
    ['Tatar', 'tt'],
    ['Telugu', 'te'],
    ['Thai', 'th'],
    ['Tibetan', 'bo'],
    ['Tigrinya', 'ti'],
    ['Tonga', 'to'],
    ['Tsonga', 'ts'],
    ['Turkish', 'tr'],
    ['Turkmen', 'tk'],
    ['Twi', 'tw'],
    ['Uyghur', 'ug'],
    ['Ukrainian', 'uk'],
    ['Urdu', 'ur'],
    ['Uzbek', 'uz'],
    ['Venda', 've'],
    ['Vietnamese', 'vi'],
    ['Volapük', 'vo'],
    ['Wallon', 'wa'],
    ['Welsh', 'cy'],
    ['Wolof', 'wo'],
    ['Western Frisian', 'fy'],
    ['Xhosa', 'xh'],
    ['Yiddish', 'yi', 'ji'],
    ['Yoruba', 'yo'],
    ['Zhuang, Chuang', 'za'],
    ['Zulu', 'zu'],
]

Solution 2:

I looked at this a little bit, and did some testing use Chrome.

navigator.languages

This returns an array of supported languages. Initially mine was only en-Us and en, however I added Welsh, and it was returned.

Solution 3:

The locale used and the form of the string returned are entirely implementation-dependen. It uses a string with a BCP 47 language tag. It is somehow still related to unicode locale.

You still can find the list of locales argument in Country Code list. But if some of the country code does not work, you can go UNICODE LOCALE DATA MARKUP LANGUAGE (LDML) to see the list of correct locales implemented there.

Reference: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl#Locale_identification_and_negotiation