You mean, a script to load jQuery in an arbitrary page? I have constructed the following cross-browser bookmarklet for this purpose:
javascript:if(!window.jQuery||confirm('Overwrite\x20current\x20version?\x20v'+jQuery.fn.jquery))(function(d,s){s=d.createElement('script');s.src="https://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.js";(d.head||d.documentElement).appendChild(s)})(document);
It detects whether jQuery exists. If it does, a confirmation dialog appears, in which the current version is shown, so that you can decide whether it’s OK to overwtite the existing jQuery object.
Currently, jQuery 1.8 is loaded from a CDN over SSL.
- If you want to load a different version, replace
'1.8'with e.g.'1.7.1'. - If you want to load a compressed version, replace
jquery.jswithjquery.min.js. - If you don’t mind loading jQuery over
http:, Google’s CDN can be replaced with:- http://code.jquery.com/jquery.js – Latest version
- http://code.jquery.com/jquery-latest.js – Latest version
- http://code.jquery.com/jquery-1.8.0.js – Version 1.8
To save you time from editing, here’s the same bookmarklet as the top of the answer, but getting the latest version (instead of a fixed one) from http://code.jquery.com/:
javascript:if(!window.jQuery||confirm('Overwrite\x20current\x20version?\x20v'+jQuery.fn.jquery))(function(d,s){s=d.createElement('script');s.src="http://code.jquery.com/jquery.js";(d.head||d.documentElement).appendChild(s)})(document);
Note: Having the latest version is nice, but don’t be surprised when jQuery “behaves weird” (=updated).