To be on the safe side of [browser compatibility](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map?redirectlocale=en-US&redirectslug=JavaScript%2FReference%2FGlobal_Objects%2FArray%2Fmap#Browser_compatibility) issues use [`$.map`](http://api.jquery.com/jQuery.map/) instead.