JQuery $(this) selector function and limitations

Question

I need help understanding $(this). Is it possible to narrow the focus of \'this\' within the parentheses or does \"this\" preclude the use of any other attributes?

Answer 1

this is not a string representing a css selector(such as div,#my_id or .my_class).
When passing this as a argument for the jQuery function, it returns a jQuery object based on the current element(what this referes to), so you cannot use something like $(this + selector).