Simon Willison’s Weblog

27th February 2009 - Link Blog

Magic properties make Firefox synchronously load the Java plugin. Even defining a function called sun() (or several other symbols) will trigger the Java VM to be loaded, dramatically hurting the performance of your page.

Posted 27th February 2009 at 4:03 pm

Recent articles

Notes on Pope Leo XIV's encyclical on AI - 25th May 2026
Datasette Agent - 21st May 2026
Gemini 3.5 Flash: more expensive, but Google plan to use it for everything - 19th May 2026

This is a link post by Simon Willison, posted on 27th February 2009.

firefox 101 java 91 javascript 755 mark-pilgrim 91 performance 95

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