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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
Languages
Tools
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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

Element click handler

HTML elements can do something when they are clicked. This is because a JavaScript function can be connected to an HTML element. Here is one snippet in which the JavaScript function associated with the element is specified in the HTML:

<!DOCTYPE html>
<html>
  <body>
    <div id="one" onclick="alert('Ouch! Stop it!')">Don't click here!</div>
  </body>
</html>

Whenever the text in the div gets clicked, a pop up with the text Ouch! Stop it! opens. Here, the JavaScript is specified directly after onclick, but if there is JavaScript on the page, you can also refer to a function that's in that JavaScript like this:

<!DOCTYPE html>
<html>
  <body>
    <script>
      function stop(){
        alert("Ouch! Stop it!");
      }
    </script>
    <div id="one" onclick="stop()">Don't click here!</div>
...
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