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.
if ( mw.user.options.get( 'skin' ) === 'vector' ) 
$(function() {
setTimeout( function() {
    'use strict';
 
    var $searchBoxes = $( '#searchInput, #searchInput2, #powerSearchText, #searchText' );
    if(!$searchBoxes.suggestions) return;
    $searchBoxes.suggestions( {
        fetch: function( query ) {
            var $this = $( this );
            if ( query.length !== 0 ) {
                var params = {
                    action: 'opensearch',
                    search: query,
                    suggest: ''
                };
                $.ajax( {
                    data: params,
                    url: mw.util.wikiScript('api'),
                    dataType: 'json',
                    success: function( data ) {
                        if ($.isArray( data ) && 1 in data) {
                            var orig = data[1];
                            $this.suggestions( 'suggestions', orig );
                            if ( data[1].length < 10 ) {
                                params.search = query.replace( /^{{/, 'Template:' );
                                if ( params.search === query )
                                    return;
                                params.limit = 10 - data[1].length;
                                $.ajax({
                                    data: params,
                                    url: mw.util.wikiScript('api'),
                                    dataType: 'json',
                                    success: function( data ) {
                                        if ( $.isArray( data ) && 1 in data ) 
                                            $this.suggestions( 'suggestions', orig.concat( data[1] ) );
                                    }
                                });
                            }
                        }
                    }
                } );
            }
        }
    });
}, 1200); // setTimeout
}); // document.ready