User:Betty/custom languages.js/documentation

This script displays a collapse/expand button next to each language. All languages are collapsed by default. You can toggle each language and your preference will be remembered.

The preferences are saved in the localStorage of the browser.

I tried TabbedLanguages and found it clunky and buggy, so I wrote my own script.

How to use:
Copy the line below, paste into your common.js page, and save.