JarCastingevent-emitter
A helper module for creating objects with event emitter capabilities.
Installation
npm
npm install --save @braintree/event-emitter
This module uses commonjs. You must use a build tool such as Browserify or Webpack to include it in your frontend project.
Usage
Creating an Object that Inherits from Event Emitter
var EventEmitter = require("@braintree/event-emitter");
function MyClass() {
EventEmitter.call(this);
}
MyClass.prototype = EventEmitter.createChild(MyClass);
Listen for events
var obj = new MyClass();
obj.on("event-name", function (data) {
console.log("called with", data.payload, "!");
});
obj._emit("event-name", { payload: "foo" }); // logs "called with foo!"
Unsubscribe from events
var obj = new MyClass();
var cb = function () {};
obj.on("event-name", cb);
obj.off("event-name", cb);
obj._emit("event-name", { payload: "foo" }); // cb is not called
Tests
npm test
