IN THIS CHAPTER
What variables are and how to use them
Why you must learn how to evaluate expressions
How to convert data from one type to another
How to use basic operators
The tutorial breaks away from HTML and documents for a while, as you begin to learn programming fundamentals that apply to practically every scripting and programming language you will encounter. Here, you start learning about variables, expressions, data types, and operators—things that might sound scary if you haven't programmed before. Don't worry. With a little practice, you will become quite comfortable with these terms and concepts.