JQuery .hasClass for multiple values in an if statement

Question

I have a simple if statement as such:

if ($(\'html\').hasClass(\'m320\')) {

// do stuff 

}

This works as expected. However, I want to add

Answer 1

For anyone wondering about some of the different performance aspects with all of these different options, I've created a jsperf case here: jsperf

In short, using element.hasClass('class') is the fastest.

Next best bet is using elem.hasClass('classA') || elem.hasClass('classB'). A note on this one: order matters! If the class 'classA' is more likely to be found, list it first! OR condition statements return as soon as one of them is met.

The worst performance by far was using element.is('.class').

Also listed in the jsperf is CyberMonk's function, and Kolja's solution.