|
Prototype: a simple example |
|
|
|
|
Written by Administrator
|
|
sabato, 11 ottobre 2008 |
|
To load Prototype into the page environment, you need to include a script tag. With the line of the following example you will be able to utilize the potential functions of this framework.
You can download
Prototype from this link: http://prototypejs.org/.
Here below a web page with Prototype
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<script type="text/javascript" src="prototype.js"></script>
<title>Blank Page</title>
</head>
<body>
<h1>Blank Page</h1>
</body>
</html>
The Prototype library defines a global object called Prototype, which holds metadata about the library itself. Here below a simple script showing the best way to determine whether the Prototype library
has been loaded into a page.
// raise an error if Prototype isn't loaded
if (typeof Prototype === "undefined") {
throw new Error("This script relies on the Prototype JavaScript framework.");
}
|
|
Last Updated ( sabato, 11 ottobre 2008 )
|
