Vim keybindings in the website

I made a little script to allow users of this website to use Vim keybindings (j, k, g and G). I’m concerned about people who block JS not being able to connect to the website. However, the script is completely unnecessary, it’s just an add-on and it isn’t essential at all.

I take great care in not using JS whenever possible. I hate sites that use JS for no reason, but this functionality is actually a great fit for JS: this is what JS was originally meant-for.