Simon Willison’s Weblog

YUI 2.4.0 released. Lots of great new features, but the one I’m most excited about is Selector: YUI finally has a CSS query engine.

Posted 5th December 2007 at 3:32 pm

Recent articles

My answers to the questions I posed about porting open source code with LLMs - 11th January 2026
Fly's new Sprites.dev addresses both developer sandboxes and API sandboxes at the same time - 9th January 2026
LLM predictions for 2026, shared with Oxide and Friends - 8th January 2026

css 231 javascript 732 libraries 23 selector 1 yahoo 107 yui 33

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