We put the value of api.cwd in the div with the currentLocation class. It is represented by the currentLocationArea private variable. We only need a function that sets the innerHTML property of the element:

var updateCurrentLocation = function() {
  currentLocationArea.innerHTML = api.cwd;
}

This is probably the simplest function of our class. We will call it every time we change the directory, which can happen pretty often. It's a good idea to delegate this calling to another method. Along with updating the current location area, we will refresh the files area too. So, it makes sense to write a render function. At the moment, the method calls only updateCurrentLocation, but we will add...