deemitter

deemitter is a module extracted from Rye.js. It doesn't contain all of the features of the DOM Event Emitter from Rye but it is an implementation that is much closer to the standard EventEmitter API in node.js core.

Usage

Usage is very similar to the standard usage of an EventEmitter:

var DOMEventEmitter = require('deemitter');

First you identify an element by creating it or selecting it:

var element = document.createElement('div');

Or:

var element = document.getElementById('potato');

Then pass it in as a constructor parameter for the deemitter:

var emitter = new DOMEventEmitter(element);

At which point, you can start adding listeners using the familiar querySelectorAll (or jQuery if that's your flavour) syntax:

// Handling an event from the element itself
emitter.addListener('click', function () { alert('You clicked on me!'); });

// Handling an event bubbled up from a child of the main element
emitter.addListener('click a', function () { alert('You clicked an anchor inside this div'); });

Additionally, you can use the standard EventEmitter methods such as removeAllListeners just as you would with any other EventEmitter.

Note: This syntax differs from the DOMEventEmitter syntax in the rye project which has the ability to accept a wider variety of parameters to addListener and has a number of other methods.

Simulate event

Similar to the trigger method in the rye DOMEventEmitter, you may call emitDOMEvent with an event type (string) and a data parameter. This will trigger the event as if it really happened. This is really just some sugar around creating and dispatching an event using the standard DOM methods.

Licence

This licence contains the same licence as the original rye project from which it was originally derived