Changing HTML Documents On-the-Fly
Listing 25.7 shows two ways HTML elements can be changed on-the-fly. The digital clock (see Figure 25.11) is an HTML element, but it changes automatically each second to reflect the local time. The paragraph following it, on the other hand, is changed in response to user input—when the user clicks the Change HTML button, the contents of the text box above the button are substituted for the paragraph. As you can see in Figure 25.12, this substitution can also include any HTML elements, as shown with the hypertext links in this example.
Figure 25.11. Real-time clocks appearing in Web pages are common; with Dynamic HTML, however, you can make them appear using only HTML elements.
Figure 25.12. Dynamic HTML can ...
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