What is the correct way to detect Opera using jQuery?

Question

Amazon.com recently updated their javascript, and it\'s causing problems with some Opera browsers.

Their browser detection code looks like so, but it\'s faulty:

Answer 1

A very simple way from Opera themselves:

if (window.opera) {
    //this browser is Opera
}

Source: http://my.opera.com/community/openweb/idopera/