LegendQuery

var legend_query = KQ.Query.LegendQuery.getInstance();
console.log(legend_query);
try {
  var options = {
    url: 'http://172.16.1.157:8699/KQGis/rest/services/zy',
    layerId: 137,
  };

  legend_query.queryAsync(options,
    function query_good () {
      console.log('query_good');

      var data = legend_query.data();
      console.log('legend query data.length:' + data.length);

      data.forEach(function (d) {
        console.log(d.properties);
      })
    },
    function query_error () {
      console.log('query_error');
    });
}
catch (e) {
  console.log('catch error:' + e);
}