June 2008
Intermediate to advanced
488 pages
15h 3m
English
Content preview from Dojo: The Definitive GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Rapidly Prototyping Widgets in Markup
Now that you have a feel for exactly how the widget lifecycle
works and have seen plenty of examples, it's time to demonstrate a
tool that you can use for quick, lightweight prototyping. Declaration is a Dijit resource that allows
you to declare a widget in markup without resorting to a separate
JavaScript file; this approach can be a tremendous boon during a
development cycle when you need to rapidly capture or test out an
idea.
Example 12-7 shows our
very first HelloWorld widget using Declaration to create a widget in a
completely self-contained page.
Example 12-7. HelloWorld (Take 6: Declaration)
<html> <head> <title>Hello World, Take 6</title> <script type="text/javascript" src="http://o.aolcdn.com/dojo/1.1/dojo/dojo.xd.js" djConfig="isDebug:true,parseOnLoad:true"> </script> <link rel="stylesheet" type="text/css" href="http://o.aolcdn.com/dojo/1.1/dojo/resources/dojo.css"> </link> <!-- define your CSS inline --> <style type="text/css"> span.hello_class { color: #009900; cursor: pointer; } </style> <script type="text/javascript"> dojo.require("dijit.Declaration"); dojo.require("dojo.parser"); </script> </head> <body> <!-- delcare the widget completely in markup --> <div dojoType="dijit.Declaration" widgetClass="dtdg.HelloWorld" defaults="{greeting:'Hello World'}"> <span class="hello_class" dojoAttachEvent='onmouseover:onMouseOver, onmouseout:onMouseOut'> ${greeting} </span> <script type="dojo/method" event="onMouseOver" args="evt"> dojo.addClass(this.domNode, ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.