Detect user's most preferred language within the given language list.

• To determine an initial display language or default language router on your application with fallback options.

• I made en and ko router to support i18n. How do I detect user's preferred language in browser?
• My app only supports en and ko for now. What language should I display when zh users visit us?
• I added fr router. But, how do I handle fr_FR and fr_CA users as well?

npm install browser-lang --save

or

yarn add browser-lang

• languages: language code list that is available on your application.

• fallback: default language when user's preferred language is not on the list.

in javascript project

// const browserLang = require('browser-lang');
import browserLang from 'browser-lang';

const myLanguage = browserLang();
// return the preferred language in browser: e.g. "ko-KR" or "ko".

const myLanguage = browserLang({
  languages: ['ko', 'de', 'zh', 'zh_TW', 'en'], 
  fallback: 'en',
});

// return "ko" if the preferred language in browser is set to "ko-KR" or "ko".
// return "en" as a fallback if the preferred language in browser is "fr".
// return 'zh' if the preferred language in browser is set to "zh_HK".

• Chrome
• Firefox
• Safari
• IE
• Edge
• Opera

MIT © Daewoong Moon