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JavaScript from Beginner to Professional

You're reading from   JavaScript from Beginner to Professional Learn JavaScript quickly by building fun, interactive, and dynamic web apps, games, and pages

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Product type Paperback
Published in Dec 2021
Publisher Packt
ISBN-13 9781800562523
Length 546 pages
Edition 1st Edition
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Authors (4):
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Codestars By Rob Percival Codestars By Rob Percival
Author Profile Icon Codestars By Rob Percival
Codestars By Rob Percival
Laurence Svekis Laurence Svekis
Author Profile Icon Laurence Svekis
Laurence Svekis
Maaike van Putten Maaike van Putten
Author Profile Icon Maaike van Putten
Maaike van Putten
Rob Percival Rob Percival
Author Profile Icon Rob Percival
Rob Percival
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Toc

Table of Contents (19) Chapters Close

Preface 1. Getting Started with JavaScript FREE CHAPTER 2. JavaScript Essentials 3. JavaScript Multiple Values 4. Logic Statements 5. Loops 6. Functions 7. Classes 8. Built-In JavaScript Methods 9. The Document Object Model 10. Dynamic Element Manipulation Using the DOM 11. Interactive Content and Event Listeners 12. Intermediate JavaScript 13. Concurrency 14. HTML5, Canvas, and JavaScript 15. Next Steps 16. Other Books You May Enjoy
17. Index
Appendix – Practice Exercise, Project, and Self-Check Quiz Answers

else if statements

A variation of the if statement is an if statement with multiple else if blocks. This can be more efficient in certain situations because you are always only going to execute one or zero blocks. If you have many if else statements underneath one another, they are going to be evaluated and possibly executed even though one of the ones above already had a condition evaluate to true and proceeded to execute the associated code block.

Here is the written template:

If *a value falls into a certain category*, then *a certain action will happen*, else if *the value falls into a different category than the previous statement*, then *a certain action will happen*, else if *the value falls into a different category than either of the previous brackets*, then *a certain action will happen*

For example, take this statement, to determine what the ticket price should be. If a person is younger than 3, then access is free, else if a person is older than...

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