The term __________________ refers to any application, such as a Web Browser or help engine, that renders HTML for display to users.
JavaScript offer a predefined method for determining when you should use custom objects instead of arrays for your programs.
When you want to evaluate multiple objects in an array, you need a __________ instead of a ___________.
The first character of a variable must not be a letter or an underscore, but subsequent characters can be letters, numbers, and the underscore character.