How to get the available languages of the current web of SharePoint from webpart?

Question

fuction getLanguage(){ var context =new SP.ClientContext(hostUrl); var web = context.get_web(); context.load(web); context.executeQueryAsync( function (sender, args) { var lcid = web.get_language(); }, function (sender, args) { }); }

Answer 1

EDIT: if you want the web's available languages you have to load the property SupportedUILanguageIds which will give you that.
Here is a link to the documentation
If you want the user's languages you have to get the SPS-MUILanguages from the user profile.
Here is some documentation on how the user profile api works documentation here
Hope that helps.