ob. ob. - 1 year ago 216
Javascript Question

jQuery .hasClass() vs .is()

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




Answer Source


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:

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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.

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