Simon Willison’s Weblog

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1 item tagged “queryselectorall”

2008

querySelectorAll in Firefox 3.1. John Resig benchmarks the various JavaScript libraries’ support for querySelelectorAll, and finds an impressive 2-6x performance improvement over native DOM traversal. It’s worth clicking through to John’s experimental plugin for adding support to jQuery, which does a clever trick using __proto__ to convert the collection returned by querySelectorAll in to a jQuery object in browsers that support it.

# 21st August 2008, 9:50 am / jquery, proto, john-resig, javascript, queryselectorall, selectors, firefox