How to refuse a callback for an event?

Question

In JavaScript, we can add several functions to the onload body or the onclick button. Is it possible to delete one of them if we have a link to a function?

If possible, how to do the same in jQuery as well as in regular JavaScript?

Answer 1

Yes, but it depends on how the handler was bound in the first place.

If you used addEventListener , you can cancel the use of removeEventListener .

If you used jQuery, you can use .unbind() .

If you used attachEvent , you can use detachEvent() .

If you used onclick or other onxxx functions, you can remove them by setting null , f.ex elem.onclick = null .