Question

What will happen if you reference document.location from within an object?

(a) Traverses the queue

(b) Finds the bugs

(c) Traverses the stack

(d) Traverses the array

The question was posed to me in homework.

My question comes from Cache Variables and Properties across Scope topic in chapter Caching, Debugging and Animation of JavaScript

Answer 1

The correct answer is (c) Traverses the stack

For explanation: window.location.href returns the href (URL) of the current page. If you reference document.location from within an object, the interpreter will need to go from the function that references the variable, up out of the namespace to the global window scope, down to the document scope, and gets the location value.