Originally written by Splarka on Wikipedia, this code has been modified to work on Wikia by Grunny and works in Monaco, Monobook, Recipes, and Answers skins. Provides a link to a batch delete form that allows you to list pages to be deleted, each on a new line, and will proceed to delete them with a set reason through the API. Script will stop when it reaches an empty line, and it can be terminated early by blanking the list of pages remaining to be deleted.
Installation
Either in your JS on your local wiki, or more commonly in your global js, add the following:
importScriptPage('AjaxBatchDelete/code.js', 'dev');