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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

Conditional ternary operators

We did not actually discuss this very important operator in our section on operators in Chapter 2, JavaScript Essentials. This is because it helps to understand the if else statement first. Remember that we had a unary operator that was called a unary operator because it only had one operand? This is why our ternary operator has its name; it has three operands. Here is its template:

operand1 ? operand2 : operand3;

operand1 is the expression that is to be evaluated. If the value of the expression is true, operand2 gets executed. If the value of the expression is false, operand3 gets executed. You can read the question mark as "then" and the colon as "else" here:

expression ? statement for true : statement associated with false;

The template for saying it in your head should be:

if *operand1*, then *operand2*, else *operand3*

Let's have a look at a few examples:

let access = age < 18 ? "denied...
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