<script src="EventDispatcher.js"></script>
<script>
// Adding events to custom object
var Car = function () {
this.start = function () {
this.dispatchEvent( { type: 'start', message: 'vroom vroom!' } );
};
};
EventDispatcher.prototype.apply( Car.prototype );
// Using events
var car = new Car();
car.addEventListener( 'start', function ( event ) {
alert( event.message );
} );
car.start();
</script>