Check if class name exists

Question

How would I check if a class name exists within the dom and create and if statement off that in pure JavaScript?

if(Check if a class name exists in the dom) {
   document.getElementById('btnNxt').setAttribute('disabled', true);
}

Possible duplicate of [Check if div with certain class name exists](https://stackoverflow.com/questions/5783280/check-if-div-with-certain-class-name-exists) — 31piy, Apr 11 '18 at 10:29

score 2 · Answer 1 · answered Apr 11 '18 at 10:41

As written by gurvinder372 all you need to do is use "querySelector".

    if(document.querySelector(".className"))
     {   
         //  do stuff
     }

Similar to jQuery selectors, by targeting only the class you are instrested in, you can see if any DOM element has the class attached in the returned element. If no element is found by the selector, null is returned. Lookup Query Selector here for more info!

Check if class name exists

1 Answers1