Code to inject Jquery into a page via the console. From http://stackoverflow.com/questions/7474354/include-jquery-in-the-javascript-console

inject_jquery.js

var jq = document.createElement('script');
jq.src = "https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js";
document.getElementsByTagName('head')[0].appendChild(jq);
// ... give time for script to load, then type.
jQuery.noConflict();