Evaluate the following statement: Hash is a set of key/value pairs with Element.Layout subclass. For convenience a developer can use #H() alias.

(42).toPaddedString(4) returns what?

What object is used to parse JSON?

How would you remove a class named 'removeclass' from an element?

Which four utilities does Prototype use?

How to create (define) a class with the name Storage in Prototype Javascript framework?

To use JSON with AJAX, what must be invoked on the transport's responseText property?

What property stores the active Ajax requests?

Which callback takes precedence: on<HTTP RESPONSE CODE>, onFailure, or onSuccess?

Method "on()" of Event class can be used to set up event handlers, with or without event delegation. What is not true about Event.on?

What is the right syntax of using Element#observe for the click event?