← Back toHTML DOM

Create one time event handler

Written byPhuoc Nguyen
Category
Level 1 — Basic
Created
24 Feb, 2020
Last updated
08 Mar, 2020

1. Use the once option

When attach a handler to given event, you can pass `{ once: true }` to the last parameter of the `addEventListener` method:
const handler = function (e) {
// The event handler
};

ele.addEventListener('event-name', handler, { once: true });
Note that this option isn't supported in IE.

2. Self-remove the handler

const handler = function (e) {
// The event handler
// Do something ...

// Remove the handler
e.target.removeEventListener(e.type, handler);
};

ele.addEventListener('event-name', handler);

Use case

See also

Questions? 🙋

Do you have any questions? Not just about this specific post, but about any topic in front-end development that you'd like to learn more about? If so, feel free to send me a message on Twitter or send me an email. You can find them at the bottom of this page.
I have a long list of upcoming posts, but your questions or ideas for the next one will be my top priority. Let's learn together! Sharing knowledge is the best way to grow 🥷.

Recent posts ⚡

Newsletter 🔔

If you're into front-end technologies and you want to see more of the content I'm creating, then you might want to consider subscribing to my newsletter.
By subscribing, you'll be the first to know about new articles, products, and exclusive promotions.
Don't worry, I won't spam you. And if you ever change your mind, you can unsubscribe at any time.
Phước Nguyễn