SnippetVamp

1 - listen for an event only once in JavaScript - 30 seconds of code

<button id="my-btn">Click me!</button>

const listenOnce = (el, evt, fn) =>
  el.addEventListener(evt, fn, { once: true });

listenOnce(
  document.getElementById('my-btn'),
  'click',
  () => console.log('Hello!')
); // 'Hello!' will only be logged on the first click