I believe this should be `urlRegex.exec(thisSubreddit.href)` as [`.match`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/match) only returns the array of results, not capturing parentheses, while [`.exec`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/exec) does.