Chapter 15. JavaScript and CSS

After reading this chapter, you'll be able to

  • Understand the basics of Cascading Style Sheets (CSS).

  • Understand the relationship between JavaScript and CSS.

  • Use JavaScript to change the style of an individual element.

  • Use JavaScript to change the style of a group of elements.

  • Use JavaScript to provide visual feedback on a Web form using CSS.

What Is CSS?

Cascading Style Sheets (CSS) is a method for specifying the look and feel of a Web page. Items such as color, fonts, and layout can all be applied using CSS.

Figure 15-1 shows a basic Web page. It's fairly boring—or at least the layout is.

A basic Web page with no styles applied

Figure 15-1. A basic Web page with ...

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