Event dispatcher

EventDispatcher.js

(function (window) {
    function EventDispatcher() {
    }

    EventDispatcher.prototype = {
        hasEvent: function () {
        },
        
        add: function () {
        },

        remove: function () {
        },

        removeAll: function () {
        },

        dispatch: function () {
        }
    };

    window.EventDispatcher = EventDispatcher;
}(window));