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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

Manipulating element style

After selecting the right element from the DOM, we can change the CSS style that applies to it. We can do this using the style property. This is how to do it:

  1. Select the right element from the DOM.
  2. Change the right property of the style property of this element.

We are going to make a button that will toggle the appearing and disappearing of a line of text. To hide something using CSS, we can set the display property of the element to none, like this for a p (paragraph) element:

p {
  display: none;
}

And we can toggle it back to visible using:

p {
  display: block;
}

We can add this style using JavaScript as well. Here is a little HTML and JavaScript snippet that will toggle the displaying of a piece of text:

<!DOCTYPE html>
<html>
  <body>
    <script>
      function toggleDisplay(){
        let p = document.getElementById("magic");
        if(p.style.display === "none...
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