Simon Willison’s Weblog

IE JScript Performance Recommendations Part 3. Once again, Microsoft’s official advice is to avoid closures entirely rather than learn how to use them safely. Sigh.

Posted 9th January 2007 at 11:48 am

Recent articles

V&A East Storehouse and Operation Mincemeat in London - 27th August 2025
The Summer of Johann: prompt injections as far as the eye can see - 15th August 2025
Open weight LLMs exhibit inconsistent performance across providers - 15th August 2025

closures 22 ie 63 javascript 718 microsoft 123

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