Today I Learned - Rocky Kev

TIL how to remove a event listener

POSTED ON:

TAGS: js events

Maybe you have a situation where you only want the event to fire once.

To Remove the Event 

const removeEventOffElement = (el, evt, fn, opts = false) => el.removeEventListener(evt, fn, opts);

const testFunction = () => console.log('My function has been called');

document.body.addEventListener('click', testFunction);// Call remove method

removeEventOffElement(document.body, 'click', fn);

To turn off the event after it's fired 

const myButton = document.getElementById("myBtn");

const myClickFunction = () => {
  console.log('this click will only get called once')
}

myButton.addEventListener('click', myClickHandler, {
  once: true,
});

REFERENCE:
21 Useful JavaScript Snippets For Everyday Development

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