Suppose you want to implement a publish/subscribe pattern in your Frontend application to react to data changes and events. First, you might be looking for an event emitter library.

Today I learned that vanilla JavaScript comes with a native event emitter, which I've been indirectly using forever. There's no need for extra code!

const emitter = new EventTarget()

emitter.addEventListener('YOLO', () => {
  console.log('YOLO');
})

// invoke attached event listeners
emitter.dispatchEvent(new Event('YOLO'));

stefanjudis.com

Dominik Schöler

makandra.de

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Last edit

2023-08-11

Michael Leimstädtner

License

Source code in this card is licensed under the MIT License.

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Posted by Dominik Schöler to makandra dev (2023-08-11 06:06)

JavaScript has a native event emitter

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Understanding sync vs. async control flow

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Summary

Introduction

Preparation