Introduction to JavaScript and the Web In this introductory chapter, we'll take a look at what JavaScript is, what it can do for you, and what youneed to be able to use it. With these foundations in place, we will see throughout the rest of the book how JavaScript can help you to create powerful web applications for your web site. The easiest way to learn something is by actually doing it, so throughout the book we'll be creating anumber of useful example programs using JavaScript. We start this process in this chapter, by the end ofwhich you will have created your first piece of JavaScript code. Additionally over the course of the book, we'll develop a complete JavaScript web application: anonline trivia quiz. By seeing it develop, step-by-step, you'll get a good understanding of how to createyour own web applications. At the end of this chapter, we'll look at the finished trivia quiz, and discussthe ideas behind its design.