yuku-t/jquery-formdata — pull request #1 by PaulAnnekov (2014-05-25 19:34:49+00:00)
Title: Removed initial superfluous checks

I have removed these superfluous checks because jQuery documentation says:
>This method can act on a jQuery object that has selected individual form elements, such as <input>, <textarea>, and <select>. However, it is typically easier to select the

tag itself for serialization

But your checks restricts elements to only <form> and do not foresee multiple elements.