So far we have gone through three chapters and learned two languages, HTML and CSS. They are used to create a web page, give it content, and add styling to it. In this chapter, we will learn a third language, JavaScript, which is used for programming your web pages and add life to them. For quite some time, JavaScript was treated by some as a second class citizen. If ever this was deserved, it is definitely no longer true today. Before we get started with JavaScript, let us get oriented in the world of programming.