Simon Willison’s Weblog

9th October 2010 - Link Blog

What is a Polyfill? Useful new term: a Polyfill is “a shim that mimics a future API providing fallback functionality to older browsers”.

Posted 9th October 2010 at 11:48 am

Recent articles

Stateless MCP has recaptured my interest (and inspired mcp-explorer and datasette-mcp) - 31st July 2026
OpenAI’s accidental cyberattack against Hugging Face is science fiction that happened - 22nd July 2026
A Fireside Chat with Cat and Thariq from the Claude Code team - 21st July 2026

This is a link post by Simon Willison, posted on 9th October 2010.

browsers 106 recovered 213 polyfill 2 remy-sharp 3

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