Your Electronic Books

You have to take a leap of faith here and
pretend a server was rendering the response that is those HTML pages. They all look virtually
the same, so I will only show one as an example (see Listing 1-2).
CHAPTER 1 n AN INTRODUCTION TO AJAX, RPC, AND MODERN RIAS 29
Listing 1-2. Sample Response Listing Characters from the Greatest Show Ever, Babylon 5!

Delenn
Dr. Stephen Franklin
G'Kar
John Sheridan
Kosh
Lita Alexander
Londo Mollari
Marcus Cole
Michael Garibaldi
Mr. Morden

As expected, it really is nothing but the markup for our second element.
Hey, I Thought This Was Ajax?!?
So, now we come to the part that does all the work here, our JavaScript function(s). First is the
updateCharacters() function, shown here:
// This function is called any time a selection is made in the first
// element.
function updateCharacters() {
var selectedShow = document.getElementById("selShow").value;
if (selectedShow == "") {
document.getElementById("divCharacters").innerHTML = "";
return;
}
// Instantiate an XMLHttpRequest object.


Pages:
70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94