Its actually a collection of items of the same type stored in a hidden or inaccessible place.
How to view a file from the cache:
Copy the code at the bottom of this post.
Click on whichever file you want to view. You should then see a page with a bunch of text and numbers.
In Chrome, go to Settings > Tools > JavaScript Console.
Near the > character, paste the copied code.
Press Enter on your keyboard.
http://www.projuktishop.com/