passing values between c++ and js Binding

cocos2d-x JavaScript
#1

Im new with cocos and js bindings and was wondering how to pass values betwen them. With this code i would like to do part of procesing in each of them.
1 Load image in c*+ and pass it to js
2 passing layer from js to c*+ and draw it

I can pass strings having problem with layers and sprite.

c++ code

Sprite* SimpleNativeClass::PassSpriteToJS()
{
    Sprite *test = Sprite::create("res/HelloWorld.png" );
    return test;
}




void SimpleNativeClass::PassLayerToCpp(cocos2d::Layer layer)
{
    Sprite *img = Sprite::create("res/HelloWorld.png" );
    layer.addChild(img);
}

js code

var MyScene = cc.Scene.extend({
    ctor:function() {
        this._super();
        cc.associateWithNative( this, cc.Scene );
    },

    onEnter:function () {
        this._super();
        var layer = new MyLayer();


        this.addChild(layer);
        layer.init();


        var x = new SimpleNativeClass();



        x.PassLayerToCpp(layer);

        this.sprite = x.PassSpriteToJS();
        //this.sprite = cc.Sprite.create("res/HelloWorld.png");// works
        layer.addChild(this.sprite);
   }
});
#2

The parameter of `SimpleNativeClass::PassLayerToCpp` should be `cocos2d::Layer*`, it’s a pointer.