Lesson 14. Introducing JavaScript

JavaScript is a scripting language that’s used to turn web pages into applications. Like Cascading Style Sheets (CSS), JavaScript can be incorporated into web pages in a number of ways. JavaScript is used to manipulate the contents of a web page or to allow users to interact with web pages without reloading the page.

This is the first of three lessons in a row on JavaScript. In this lesson, I explain how JavaScript works and how to use it in your pages. In the next lesson, “Using JavaScript in Your Pages,” I walk you through some real-world examples, and then in the following lesson, “Using JavaScript Libraries,” I introduce some third-party libraries that you can use to make your life as a JavaScript programmer ...

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