Skip to Main Content
JavaScript Essentials For Dummies
book

JavaScript Essentials For Dummies

by Paul McFedries
April 2024
Beginner content levelBeginner
192 pages
3h 21m
English
For Dummies
Content preview from JavaScript Essentials For Dummies

Chapter 2

Programming with Variables

IN THIS CHAPTER

Bullet Understanding variables

Bullet Assigning names to variables

Bullet Introducing JavaScript data types

Bullet Figuring out numbers

Bullet 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 ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

JavaScript All-in-One For Dummies

JavaScript All-in-One For Dummies

Chris Minnick

Publisher Resources

ISBN: 9781394263219Purchase Link