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Web Coding & Development All-in-One For Dummies, 2nd Edition
book

Web Coding & Development All-in-One For Dummies, 2nd Edition

by Paul McFedries
January 2024
Beginner content levelBeginner
848 pages
18h 2m
English
For Dummies
Content preview from Web Coding & Development All-in-One For Dummies, 2nd Edition

Chapter 2

Understanding Variables

IN THIS CHAPTER

Bullet Getting your head around variables

Bullet Assigning names to variables

Bullet Introducing JavaScript data types

Bullet Figuring out numbers

Bullet Stringing strings together

You should imagine variables as tentacles, rather than boxes. They do not contain values; they grasp them.

—MARIJN HAVERBEKE

You may have heard about — or perhaps even know — someone who, through mishap or misfortune, has lost the ability to retain short-term memories. If you introduce yourself to one of these folks, they’ll be asking you your name again five minutes later. They live in a perpetual present, seeing the world anew every minute of every day.

What, I’m sure you’re asking yourself by now, can any of this possibly have to do with coding? Just that, by default, your JavaScript programs also live a life without short-term memory. The web browser executes your code one statement at a time, until no more statements are left to process. It all happens in the perpetual present. Ah, ...

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Publisher Resources

ISBN: 9781394197026Purchase Link