event3.js

var Event = (function () {
    var Event = function Event() {};

    Event.prototype._target;

    Event.prototype.set = function set( value ) {
        value = value || '';

        if ( value ) {
            _target = value;
        }

        return this;
    };

    Event.prototype.get = function get() {
        return _target;
    };

    return new Event();
} ());

var event = Event;

event.set('Hello skitter');

console.log(event.get());

console.log(Event.set('Boy').get());