How to add touch event in layout

cocos2d-x JavaScript
1

I am trying to add touch event in layout elements. After touching it, I want to delete it.
var bird1 = new ccui.ImageView();
bird1.loadTexture(res.Bird);
bird1.setPosition(cc.p(size.width / 2, (size.height / 5) * 4));
bird1.setTouchEnabled(true);
bird1.addTouchEventListener(this.touchEvent, this);
layout.addChild(bird1);
this.addChild(layout);

touchEvent: function(sender, type)

    {

        switch (type)

        {

            case ccui.Widget.TOUCH_BEGAN:

                cc.log("Touch Down");

                type.setOpacity(0);

                break;

        }

    },