Web Design in a Nutshell, 3rd Edition

Reading and Manipulating Document Structure

Once you can find your way around the DOM, it is easy to collect and alter the content of elements on the page. The content you collect can be in the form of other elements, attribute values, and even text content. The primary means of doing this is by using what are sometimes referred to as the “getters and setters” of the DOM: innerHTML, nodeValue, getAttribute( ), and setAttribute( ).