Jones Darren - Learn To Code With JavaScript.pdf

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Learn to Code with JavaScript
Copyright © 2021 SitePoint Pty. Ltd.
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Simon Mackie
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Published by SitePoint Pty. Ltd.
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VIC Australia 3065
Web: www.sitepoint.com
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ISBN 978-1-925836-40-0 (print)
ISBN 978-1-925836-41-7 (ebook)
Printed and bound in the United States of America
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Learn to Code with JavaScript
About Darren Jones
Darren has enjoyed coding since learning how to program in BASIC on his first
Acorn Electron computer. Since then, he’s taught himself Ruby and JavaScript
and is the author of
JavaScript: Novice to Ninja
and
Jump Start Sinatra.
He also
produced the
Getting Started With Ruby
video tutorials for SitePoint Premium
and has written a number of articles on the SitePoint website. He was born in
the city of Manchester in the UK, where he still lives, and he teaches
Mathematics and Computing at a local high school. You can find him on
Twitter
@daz4126
1
.
About SitePoint
SitePoint specializes in publishing fun, practical, and easy-to-understand
content for web professionals. Visit
https://www.sitepoint.com/
to access our
blogs, books, newsletters, articles, and community forums. You’ll find a stack
of information on JavaScript, PHP, Ruby, mobile development, design, and
more.
1. https://twitter.com/daz4126
Table of Contents
iii
Table of Contents
Preface
.......................................................................................... xix
Who Should Read This Book?
................................................... xx
Conventions Used
........................................................................... xx
Supplementary Materials
............................................................ xxi
Chapter 1:
Press Start
................................................... 1
Programming
........................................................................................2
Algorithms
..................................................................................3
Pseudocode
.............................................................................. 6
A Brief History of Programming
...................................................7
JavaScript
.............................................................................................. 8
The History of JavaScript
.................................................... 8
JavaScript Versions
.............................................................. 10
Hello, World! Your First JavaScript Program
........................ 11
The Console?
........................................................................... 11
JavaScript in the Browser
..............................................................13
The Structure of a Web Page
..........................................13
I Can Code a Rainbow
.....................................................................15
iv
Learn to Code with JavaScript
A Programmer’s Mindset
.............................................................. 18
Challenges
.......................................................................................... 19
Summary
.............................................................................................. 19
Chapter 2:
Programming Basics
....................21
Comments
........................................................................................... 22
Programming Grammar
................................................................ 23
Statements
.............................................................................. 23
Blocks
......................................................................................... 24
Whitespace
............................................................................. 25
Data Types
............................................................................... 25
What Type Are You?
............................................................ 27
Operators
..................................................................................28
Variables
...............................................................................................28
Declaring and Assigning Variables
..............................28
Constants
.................................................................................30
Assignment
...............................................................................31
Unde ned
................................................................................. 33
Naming Variables
................................................................. 33
Pop-up Interaction
.......................................................................... 35

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