Why “$().ready(handler)” is not recommended?

Question

From the jQuery API docs site for ready

All three of the following syntaxes are equivalent:

• $(document).ready(handle

Answer 1

I would say its simply the fact that $() returns an empty object whereas $(document) does not so your applying ready() to different things; it still works, but I would say its not intuitive.

$(document).ready(function(){}).prop("title") // the title
$().ready(function(){}).prop("title")  //null - no backing document