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The New Yahoo! Homepage and YUI 3.0 Nicholas C. Zakas Principal Front End Engineer, Yahoo!
1996
1997
1999
2002
2004
2006 YUI 2
Homepage Stats 300 million unique users worldwide per month 100 million unique users in the United States per month
2008 YUI 3
Goals Eliminate global dependencies Make it small, make it fast Create version independence Allow code portability
Eliminate Global Dependencies YAHOO YAHOO.util YAHOO.util.Dom YAHOO.util.Event YAHOO.My YAHOO.My.Namespace Dependencies:
Eliminate Global Dependencies
Make It Small, Make It Fast YUI 2.6.0 dragdrop.js (24 KB) YUI 3.0 PR1 dd-ddm-base.js (2 KB) dd-ddm.js (1 KB) dd-ddm-Drop.js (3 KB) dd-drag.js (7 KB) dd-drop.js (4 KB) dd-proxy.js (2 KB) dd-constrain.js (3 KB) dd-plugin.js (0.2 KB) dd-drop-plugin.js (0.2 KB)
Make It Small, Make It Fast
Create Version Independence
Allow Code Portability
Be Forward Compatible
3 > 2
 
Etcetera My blog:  www.nczonline.net My email: [email_address] Twitter: @slicknet YUI 3: http://developer.yahoo.com/yui/3/

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The New Yahoo! Homepage and YUI 3

Editor's Notes

  1. Over the past couple of years, we've seen JavaScript development earn recognition as a true discipline. The idea that you should architect your code, use patterns and good programming practices has really elevated the role of the front end engineer. In my opinion, part of this elevation has been the adoption of what has traditionally been considered back end methodologies. We now focus on performance and algorithms, there's unit testing for JavaScript, and so much more. One of the areas that I've seen a much slower than adoption that I'd like is in the area of error handling. How many people have an error handling strategy for their backend? How many have dashboards that display problems with uptime and performance? How many have anything similar for the front end? Typically, the front end has been this black hole of information. You may get a few customer reports here and there, but you have no information about what's going on, how often it's occurring, or how many people have been affected.