Simon Willison’s Weblog

Deep Tracing of Internet Explorer. dynaTrace Ajax looks like an awesome tool. For once, Internet Explorer has a development tool that other browsers can be jealous of.

Posted 18th November 2009 at 8:06 am

Recent articles

Reverse engineering Codex CLI to get GPT-5-Codex-Mini to draw me a pelican - 9th November 2025
Video + notes on upgrading a Datasette plugin for the latest 1.0 alpha, with help from uv and OpenAI Codex CLI - 6th November 2025
Code research projects with async coding agents like Claude Code and Codex - 6th November 2025

ajax 61 debugging 35 dynatraceajax 1 ie 63 internet-explorer 25 javascript 724 john-resig 32

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