Simon Willison’s Weblog

Low Pro Behaviours 101. A neatly packaged method of enhancing an existing DOM element with pre-packaged behaviours.

Posted 17th July 2007 at 10:09 am

Recent articles

Video: Building a tool to copy-paste share terminal sessions using Claude Code for web - 23rd October 2025
Dane Stuckey (OpenAI CISO) on prompt injection risks for ChatGPT Atlas - 22nd October 2025
Living dangerously with Claude - 22nd October 2025

behaviours 1 dan-webb 6 dom 13 javascript 723 lowpro 2 prototype 16

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe