Thread:KockaAdmiralac/@comment-31984232-20181214195508/@comment-27345308-20181214200434

Your web console is probably the best tool you could use for that. There's no real way to reverse the effects of arbitrary JavaScript without reloading the page, so the functionality wouldn't be the same as in PortableCSSPad (see also w:c:dev:Special:Diff/71974).

I made a very simple script that adds a "Toggle PortableJSPad" button to the toolbar and when you open it it's a big textbox in which you can enter JS and click CTRL+Enter to run it: There is also w:c:doork:User:Doork/PortableJSPad.TopSekrit.Javascript. But again, I don't know why would you bother with any scripts if the web console integrated in your browser does the job the best.