Events

A simple lightweight event handler package for Falak JS.

Note this package could be used as a standalone package

Installation

This package is automatically installed on each new application so you don't have to install it.

For standalone usage npm i -s flk-events

Package info

Alias: events

The Events class is used to move between all components and packages with events without any conflict;

Usage

If you want to use events in any component class, just inject it into the constructor with events parameter

home-page.component.js

class HomePage {
    constructor(events) {
        this.events = events;
    }
}

For outer usage use the DI.resolve('events').

Event listeners

To add event listener to any event use the on method, for example in the main.js file:

main.js

let events = DI.resolve('events');
events.on('app.ready', function () {
    // do something when app is ready
});

addEventListener and subscribe are alias methods to on method.

You may use the subscribe if you're more familiar with it than the on method

main.js

let events = DI.resolve('events');
events.subscribe('app.ready', function () {
    // do something when app is ready
});

Triggering event

To trigger event use the trigger method or emit as an alias.

// listen to the user waking up
let events = DI.resolve('events');

events.on('user.wake-up', user => {
    console.log(user.id); // 12
});

setTimeout(() => {
    events.trigger('user.wake-up', {
        id: 12
    });
}, 4000);

You can pass any number of arguments to the trigger method as it will be passed to the callback function in the on method.