获取Button脚本挂载的事件名

(function(){
    var Super = function(){};
    Super.prototype = cc.Button.prototype;
    //实例化原型
    Super.prototype._onTouchEnded = function (t) {
        if (this.interactable && this.enabledInHierarchy) {
            var callback = t.currentTarget._bubblingListeners._callbackTable.touchend.targets[0].clickEvents.length;
            if(callback != 0){
                cc.hb.audioMgr.playEffect("click", false);//播放Button音效
            }
            //t.currentTarget._bubblingListeners._callbackTable.touchend.targets[0].clickEvents[0].handler//获取Button脚本挂载的事件名
            if (this._pressed) {
                cc.Component.EventHandler.emitEvents(this.clickEvents, t);
                this.node.emit("click", this);
            }
            this._pressed = !1;
            this._updateState();
            t.stopPropagation();
        }
    };
})();