There is no way to cleanly remove an event handler unless you stored a reference to the event handler at creation. I will generally add these to the main object on that page, then you can iterate and cleanly dispose of them when done with that object.
The best thing to do is to install the Tampermonkey extension. This will allow you to easily install Greasemonkey scripts, and to easily manage them. Also it makes it easier to install userscripts directly from sites like OpenUserJS, MonkeyGuts, etc. Finally, it unlocks most all of the GM functionality that you don’t get by installing … Read more
Never use .onclick(), or similar attributes from a userscript! (It’s also poor practice in a regular web page). The reason is that userscripts operate in a sandbox (“isolated world”), and onclick operates in the target-page scope and cannot see any functions your script creates. Always use addEventListener()Doc (or an equivalent library function, like jQuery .on()). … Read more
From “User Script Tip: Using jQuery – Erik Vold’s Blog” // ==UserScript== // @name jQuery For Chrome (A Cross Browser Example) // @namespace jQueryForChromeExample // @include * // @author Erik Vergobbi Vold & Tyler G. Hicks-Wright // @description This userscript is meant to be an example on how to use jQuery in a userscript on … Read more