What is custom-event?
The custom-event npm package allows developers to create and manage custom events in JavaScript environments. This package is particularly useful for handling custom event-driven interactions in applications, making it easier to manage asynchronous code and event-based logic.
What are custom-event's main functionalities?
Creating custom events
This feature allows developers to create a new custom event with a specified type and optional details. The event can then be dispatched to trigger event listeners that are set up to respond to it.
const CustomEvent = require('custom-event');
const event = new CustomEvent('my-event', { detail: { message: 'Hello world!' } });
document.dispatchEvent(event);
Listening to custom events
This code sets up an event listener for 'my-event'. When this event is dispatched, the listener triggers and logs the message contained in the event's details.
document.addEventListener('my-event', function(e) { console.log(e.detail.message); });
Other packages similar to custom-event
eventemitter3
EventEmitter3 is a high-performance event emitter. It provides similar functionalities to custom-event but with a focus on performance and additional features like wildcard listeners. Compared to custom-event, EventEmitter3 offers a broader API for managing events in more complex scenarios.
wolfy87-eventemitter
Wolfy87's EventEmitter is another alternative that offers a similar event management system. It supports features like namespaced events, which can help in organizing event types and listeners more efficiently. It is more feature-rich compared to custom-event, providing more flexibility in handling events.
custom-event
Cross-browser CustomEvent
constructor
https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent.CustomEvent
Installation
$ npm install custom-event
Example
var CustomEvent = require('custom-event');
target.addEventListener('cat', function(e) { process(e.detail) });
var event = new CustomEvent('cat', {
detail: {
hazcheeseburger: true
}
});
target.dispatchEvent(event);