如何在Jquery UI Autocomplete中搜索多个属性？

$( "#searchInput" ).autocomplete({
  source: function( request, response ) {
    $.ajax({
      url: "search.php",
      dataType: "json",
      data: {
        term: request.term
      },
      success: function( data ) {
        var results = [];
        var searchTerm = request.term.toLowerCase();
        
        // 遍历数据，搜索多个属性
        $.each( data, function( index, item ) {
          if (item.property1.toLowerCase().indexOf(searchTerm) !== -1 ||
              item.property2.toLowerCase().indexOf(searchTerm) !== -1 ||
              item.property3.toLowerCase().indexOf(searchTerm) !== -1) {
            results.push(item);
          }
        });
        
        response(results);
      }
    });
  },
  minLength: 2
});