Interestingly enough, although javascript gets used, the vote links don't trigger an XHR request - instead the javascript parses the vote URL from the vote butt

Interestingly enough, although javascript gets used, the vote links don't trigger an XHR request - instead the javascript parses the vote URL from the vote button element and then a GET request is made by creating an Image object in JS. You can see votes appear on your network tab under the image tab instead of Fetch/XHR, even though their response return type is text/html -- interesting little hack, although I'm not quite sure why it's done this way instead of fetching since it already requires JS.