Simon Willison’s Weblog

Escaping regular expression characters in JavaScript (updated). The JavaScript regular expression meta-character escaping code I posted back in 2006 has some serious flaws—I’ve just posted an update to the original post.

Posted 4th July 2010 at 6:23 pm

Recent articles

OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI - 12th December 2025
GPT-5.2 - 11th December 2025
Useful patterns for building HTML tools - 10th December 2025

escaping 4 javascript 727 regular-expressions 13 recovered 213

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