Chapter 2
Programming with Variables
IN THIS CHAPTER
Understanding variables
Assigning names to variables
Introducing JavaScript data types
Figuring out numbers
Stringing strings together
By default, JavaScript programs live a life without short-term memory. The web browser executes your code one statement at a time until there are no more statements left to process. It all happens in the perpetual present. Ah, but notice that I refer to this lack of short-term memory as the “default” state of your scripts. It’s not the only state, so that means things can be different. You have the power to give your scripts the gift of short-term memory, and you do that by using handy little chunks of code called variables. In this chapter, you delve into variables, which is a fundamental and crucial programming topic. You investigate what variables are, what you can do with them, and how to wield them in your JavaScript code.
Getting Your Head around Variables
Why would a script need short-term ...
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