Hour 1. Introducing JavaScript

What You’ll Learn in This Hour

• About server-side and client-side programming

• How JavaScript can improve your web pages

• The history of JavaScript

• The basics of the Document Object Model (DOM)

• What the window and document objects are

• How to add content to your web page using JavaScript

• How to alert the user with a dialog box

The modern Web has little to do with its original, text-only ancestor. Modern web pages can involve audio, video, animated graphics, interactive navigation, and much more—and more often than not, JavaScript plays a big part in making it all possible.

In this first hour we describe what JavaScript is, briefly review the language’s origins, and consider the kinds of things it can ...

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