In Chrome/Chromium, $$() is a shortcut for document.querySelectorAll(). | Hacker News

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		hk__2 on Oct 3, 2012 \| parent \| context \| favorite \| on: DoubleDollarJS.com In Chrome/Chromium, $$() is a shortcut for document.querySelectorAll().

yahelc on Oct 3, 2012 | [–]

Only in the Webkit Inspector console, nowhere else. $ is also a shortcut (I forget for what though).

They're over-written by a page if that page defines that variable globally in some way.

michaelbuckbee on Oct 3, 2012 | [–]

It is also used by prototype.js - http://api.prototypejs.org/dom/dollar-dollar/

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