Google implements XPath and XSLT in Javascript? What's the...

Just look here.

AJAXSLT is an implementation of XSL-T in JavaScript, intended for use in fat web pages, which are nowadays referred to as AJAX applications. Because XSL-T uses XPath, it is also an implementation of XPath that can be used independently of XSL-T.

That's weird. Wait, all modern browsers (ok, except Opera) support XSLT natvely, don't they? Well, here is how they explain the goals:

Both XPath and XSL-T are built into some of the modern browsers, however not in all. This library runs on many browsers, including those that don't support XSLT adaequately or at all, which is why the library was written in the first place. (See BROWSER COMPATIBILITY, below.)

And more:

Safari/2.0 has XSL-T built in, but it is not exposed to JavaScript, but is only applied to XML documents that have a stylesheet declaration when they are loaded.

Internet Explorer exposes XSLT via the transformNode() method on the XML DOM. However, this is not avaiable if ActiveX is disabled.

Firefox exploses XSLT via the XSLTProcessor() object, however XPath is not exposed in the DOM.

Hmmmm, still weird. But still cool. Any efforts to bring XSLT client side are always cool. I'm glad to see Google supporting the idea.