/*!  * Vector HeadAnchors gadget, from <https://mediawiki.org/wiki/MediaWiki:Gadget-vector-headanchor.js>  *  * Copyright 2013-2020 Timo Tijhof  * @license MIT <https://opensource.org/licenses/MIT>  */ // Revision as of 2021-01-29  mw.hook( 'wikipage.content' ).add( function ( $content ) {   $content.find( 'span.mw-headline' ).each( function ( i, el ) {     var wrap, anchor,       id = el.id,       heading = el.parentNode;      // If anchor is here already, skip.     if ( !id || heading.querySelector( '.tpl-vheadanchor') ) {       return;     }      heading.classList.add('tpl-vheadanchor-heading');      // Insert anchor.     anchor = document.createElement( 'a' );     anchor.href = '#' + id;     anchor.className = 'tpl-vheadanchor';     anchor.title = 'Link to this section';     heading.appendChild(anchor);   } ); } );