Javascript framework usage among top websites
To answer that question, we here at Pingdom have examined a set of almost 200 popular websites to see if they use a Javascript framework, and in that case which framework they have chosen. The websites were collected from the Alexa US Top 100 and the Webware Top 100 Web Apps. The frameworks we looked for were Prototype, JQuery, MooTools, Yahoo! UI Library, Dojo, ExtJS and MochiKit.

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