handleEvent

gistfile1.txt

var eventHandler = {
    handleEvent: function(ev) {
        switch (ev.type) {
            case 'click':
                this.click();
                break;
            case 'touchstart':
                this.touch();
                break;
        }
    },
    click: function() {
         // hogehoge
    },
    touch: function() {
         // hogehoge
    }
};

elm.addEventListener('click', eventHandler, false);
elm.addEventListener('touch', eventHandler, false);