Question

In my project,I use the mvc concept when do the UI related operation.

For example,there is a model named “Map”,then there is another object “MapView” along with “Map” object.

Now I create them this way:

function Map(){
  //other codes.
  this.view=new MapView(this);
}


function MapView(model){
  //other code
  this.model=model;
}

Now both the model and view have a reference to each other.

I wonder this is the best practice?

Will this cause performance problem?

Answer 1

There is nothing wrong performance wise (it might slow down on IE3 or NN4 though).

However it seems bad to have a bidirectional reference from a design view point.

You may want to use reference passing instead like MapView.render(model)