Unwatch multiple repositories at once in GiHub

unwatch-repos.js

/* USAGE
   Go to https://github.com/watching
   Paste this function in the console
   e.g. unwatchRepos("rails|node|go")
   That unwatches repos containing rails, node or go in the repo link.
*/

var unwatchRepos = (pattern) => {
 var list = document.getElementsByClassName('repo-list')[0]
 var rows = list.getElementsByClassName('js-subscription-row')

 for(var i = 0; i < rows.length; i++) {
   var row = rows[i]
   var link = row.getElementsByTagName('a')[0]
   if(RegExp(pattern).test(link.href)) {
     row.getElementsByClassName('btn-sm')[0].click()
   }
 }
}