March 2006
Beginner to intermediate
448 pages
13h 33m
English
Content preview from Head Rush Ajax
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392
Appendix I
#1: Ajax toolkits
We’ve talked a few times about using an Ajax “toolkit” to handle repetitive
tasks like creating a request object or sending a request. Once you
understand how to write this code yourself, you may want to look into a few
of these toolkits and see if they offer any functionality you might to take
advantage of. Here are a few of the most popular toolkits:
ajax toolkits
You’ll also see these
toolkits referred to
as “frameworks”. Don’t
worry... it’s all pretty
much the same thing.
Prototype
Where to get it: http://prototype.conio.net/
How to use it:
<head>
<title>The New and Improved Break Neck Pizza</title>
<link rel=”stylesheet” type=”text/css” href=”breakneck.css” />
<script type=”text/javascript” src=”prototype.js”> </script>
<script type=”text/javascript” src=”pizza.js”> </script>
</head>
Just reference the prototype.js le
you download from the Prototype
web site in your HTML.
Sending a request:
var request = new Ajax.Request(
url,
{
method: ‘get’,
parameters: ‘phone=2142908762&name=Mary’,
onSuccess: updatePage,
onFailure: reportError
}
Ajax.Request is the Prototype JavaScript
class that handles Ajax requests.
url is the URL to send the request to.
This can be either
“get” or “post”.
Here are your name/value
pairs that are sent to the
server-side program.
Here’s one of the nicer features of
Prototype: you can set up separate
functions to handle different ...