---
title: "getLanguageInfoFromFlag | Client js | Api client"
description: "Documentation for MapTiler Client"
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# Function getLanguageInfoFromFlag

-   getLanguageInfoFromFlag(  
        languageFlag: string,  
        languageDictionary?: { \[k: string\]: [LanguageInfo](https://docs.maptiler.com/client-js/api/types/language.LanguageInfo/) },  
    ): [LanguageInfo](https://docs.maptiler.com/client-js/api/types/language.LanguageInfo/)[](#getlanguageinfofromflag)
    
    Get the language info from a language flag (e.g. `"name:en"`). This is also handy to check is a given language flag is a supported language. By default, the language dictionary to look into is the one defined in this library, but another one could be provided Returns `null` if not found.
    
    #### Parameters
    
    -   languageFlag: string
    -   languageDictionary: { \[k: string\]: [LanguageInfo](https://docs.maptiler.com/client-js/api/types/language.LanguageInfo/) } = Language
    
    #### Returns [LanguageInfo](https://docs.maptiler.com/client-js/api/types/language.LanguageInfo/)
    
    -   Defined in [language.ts:1068](https://github.com/maptiler/maptiler-client-js/blob/f88659ae276c959a754e4c0f3b5c2aae1f483caa/src/language.ts#L1068)