Simon Willison’s Weblog


Friday, 20th December 2002

Smarter exceptions

Useful Java article: Make Exceptions Smarter (via Keith).

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Debugging HTTP headers

Tantek has released two new favelets for revealing HTTP information, using Mozilla’s ever useful Web Sniffer and Delorie’s HTTP Header Viewer. I spotted a similar tool on a recent trip to MozDev: LiveHTTPHeaders adds a “Headers” tab to the page information box in Mozilla 1.2, showing the full request and response headers used for the current page. It’s a very nice tool, but unfortunately does not yet work with Phoenix (the headers tab is added to the info box but the header information does not appear).

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Security and coding style

A couple of good web development security resources:

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Blockquote citations

Inspired by Adrian Holovaty, I spent an hour this morning getting dirty with the DOM in an effort to replicate his funky CSS blockquote citations effect but with links that you can actually click on. The resulting code is now active on this weblog—check the javascript out here.

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Someone, please, tell me UsabilityNet is a joke. Spotted via an article on, UsabilityNet (apparently recently redesigned) claims to be “a project funded by the European Union to provide resources and networking for usability practitioners, managers and EU projects”. Again, IANAUE but here are some things wrong with it just off the top of my head:

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2002 » December