Note: After saving, you have to bypass your browser's cache to see the changes. Google Chrome, Firefox, Microsoft Edge and Safari: Hold down the ⇧ Shift key and click the Reload toolbar button. For details and instructions about other browsers, see Wikipedia:Bypass your cache.
// User:Quarl/purge.js - add "purge" tab to the purge server cache

// requres: wikipage.js, addlilink.js

// <pre><nowki>

function addTab_Purge() {
    if (wikiPage.nsSpecialP) return;
    addTab(wikiPage.qurl + '&action=purge', 'Purge', 'ca-purge', 'Purge the internal cache for this page');
}

$(addTab_Purge);

// </nowiki></pre>