Question

I would like to read out the classnames attached to a certain element and take action based on that the classname contains a certain value (“active”). The classname could be something like: class=”bla-bla-bla first active”. What is the best way to do that?

Answer 1

Class names are separated by spaces, so you just need $(something).hasClass('active')

Additionally, you could use the .is() method, like this: $(somthing).is('.active'), which returns true or false.

Finally, you might be better off using it as the selector, like so: $('li.active').doSomething()