2

When I call the jQuery method .addClass() do I need to check if the class already exists or it's already implemented? I mean, if I call the same method twice, like 

$(var).addClass('class1');
$(var).addClass('class1');

does it cause any issue or it's fine? Thanks

Improve this question
1
  • 3
    It's absolutely fine. jQuery is very tolerant. Commented Oct 19, 2015 at 8:01

2 Answers 2

Reset to default
3

No you don't need to. addClass internally checks whether class exists. if not, then adds the class

Reference

Improve this answer
Sign up to request clarification or add additional context in comments.

1 Comment

Thanks for the answer
0

For check if an element have your class name, you can do:

$(var).hasClass('class1');
Improve this answer

Comments

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.