addClass to an element with that class already? [closed]

Question

If I were to call addClass on an element that already had the class I was adding, such as:

<div id="lolID" class="lolClass"></div>

and then:

$("#lolID").addClass("lolClass");

Would this cause problems or just do nothing?

Same for removeClass but reversed.

Answer 1

Nope. No effect. jQuery handles that for you.