Exercises for Customizing Vendor Systems

Table of Contents

• Chapter 4: JavaScript Basics
• Chapter 5: Bookmarklets
• Chapter 6: Advanced JavaScript
• Chapter 7: JavaScript Examples
• Chapter 8: jQuery Basics
• Chapter 9: Advanced jQuery
• Chapter 10: jQuery Examples
• Chapter 11: AJAX
• Chapter 12: AJAX Examples
• Chapter 13: Helper Scripts in PHP
• Appendix: Developer Tools Tutorials
• Appendix: Text Editors
• Appendix: JavaScript & jQuery Tutorials

Code for Chapter 3: Working with Developer Tools:

To practice running JavaScript in the Developer Tools, open up Developer Tools on this page (F12 or right-click and select "Inspect Element"), then switch the the "Console." Paste the code below at the chevron (">"). What happened?

var liList = document.getElementById("table-of-contents").getElementsByTagName("li");
var liElements = liList.length;
alert('There are ' + liElements + ' exercises for this book');

Now try changing the alert() function to console.log(). How was this different than the first time you ran it?