YUI recommends YUI 3.
YUI 2 has been deprecated since 2011. This site acts as an archive for files and documentation.
This example demonstrates how to use the Connection Manager and a PHP proxy — to work around XMLHttpRequest's same-domain policy — to retrieve an XML document from http://xml.weather.yahoo.com/forecastrss
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To try out the example, fill in your five-digit US zip code, or Location ID.