coreenmo-event-emitter
v2.1.0
Published
Packages to implement the Observer pattern, enabling communication between application components.
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💾 Requirements
Web Browser
- Can be used as an emulator to build applications. Example [Chrome, Firefox, Safari & Opera].Internet
- Because many use CDN and to make it easier to find solutions to all problems.
🎯 How To Use
Example Syntax
// Import EventEmitter from the package
const EventEmitter = require('./src/EventEmitter');
// Create an instance of EventEmitter
const emitter = new EventEmitter();
// Define a listener function
const listener = (data) => {
console.log('Event triggered with data:', data);
};
// Register the listener for the 'customEvent' event
emitter.on('customEvent', listener);
// Emit the 'customEvent' event with some data
emitter.emit('customEvent', 'Hello, World!');
// Remove the listener for the 'customEvent' event
emitter.off('customEvent', listener);
Explanation
- The "Event Emitter" package has three main methods: on, emit, and off.
- The on method is used to add a listener to an event.
- The emit method is used to emit an event with optional parameters.
- The off method is used to remove the listener from an event.
Return Value
- The on and off methods do not return a specific value.
- The emit method does not return a value and is only used to trigger the event.