OneClickArchiver (source) – updated version of Technical 13's script to account for MediaWiki changes. See User:Technical 13/Scripts/OneClickArchiver for details.
Get ScriptInstaller, then navigate to User:Evad37/OneClickArchiver.js and click "Install" at the top.
(This will generate text which can be used on any-language Wikipedia.)
((subst:lusc|1=User:Evad37/OneClickArchiver.js))
on the bottom of your common.js page or your skin.js page.(This can only be used on the English Wikipedia.)
((subst:iusc|1=User:Evad37/OneClickArchiver.js))
on the bottom of your common.js page or your skin.js page.