addClass已添加到具有该类的元素? [英] addClass to an element with that class already?

问题描述

如果要在已经具有要添加的类的元素上调用addClass，例如:

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>

然后:

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

这会导致问题还是什么都不做?

Would this cause problems or just do nothing?

与removeClass相同，但相反.

Same for removeClass but reversed.

推荐答案

不是.没有效果. jQuery为您处理.

Nope. No effect. jQuery handles that for you.

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