User:Husky/global.js

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// Add Wikidata ID to title
const itemId = mw.config.get('wgWikibaseItemId');

if (itemId) {
    var html = '<sup class="nf-wikibase-link" style="font-size:14px;">';
    html += '<a href="https://www.wikidata.org/wiki/Special:EntityPage/' + itemId + '">';
    html += itemId + '</a></sup>';
    document.querySelector("#firstHeading").innerHTML += html;
}