If you refresh your page now, you should see another error. In your console, expand out the response object so you can read the exact error:
We forgot to search for anything! That's easy enough to solve. If you look at the documentation for the cooperhewitt.search.objects method here, you can see that there are all sorts of different ways we can search for objects. For this example, let's just use the general query parameter. Update your ajaxData variable so that it contains a key named "query" with the value of "computer".
Refresh the page one last time and let's see what we've got: