创建Menu的时候出错(求助!)

Cocos2d-x
#1

谢谢你的发言` 非常有意义

#2 
this._leftArrows = cc.MenuItemImage.create(img_arrowsLeft, img_arrowsLeft, this,this.frontAction);
            this._rightArrows = cc.MenuItemImage.create(img_arrowsRight, img_arrowsRight, this, this.nextAction);
            this._leftArrows.setPosition(cc.ccp(49+86/2, 768-337-56/2));
            this._rightArrows.setPosition(cc.ccp(882+86/2, 768-337-56/2));
            var menu = cc.Menu.create(this._leftArrows, this._rightArrows, null);
            menu.setPosition(cc.PointZero());
            this.addChild(menu, 7);
#3

在线等回答～～