Besides adding event listeners, other operations you may want to do are removing events from an element, cloning events from other elements, and firing off events for elements manually. We'll go through each one of these operations.
There are instances when you want to remove an event listener that you've added to an element. One reason would be that you only want an element to be triggered once, and after that event has been triggered, you no longer want to trigger it again. To ensure it only fires once, you should remove the event once certain conditions have been met.