ob. ob. - 5 months ago 49x
Javascript Question

jQuery .hasClass() vs .is()

is there a preferred method of determining whether an element is assigned a class, from a performance standpoint?






I committed a test following a comment and four upvotes to very comment. It turns out that what I had said is the correct answer. Here is the result:

enter image description here


The is is multi-purpose, you can for example do is('.class'), is(':checked'), etc which means is has more to do where is hasClass is limited which only checks for a class being set or not.

Hence, hasClass should be faster if performance at any level is your priority.