          "source": "mapbox-tiles",
          "minzoom": 0,
          "maxzoom": 22
        }]
      }, */
                    zoom: 10,
                    pitch: 45,
                    center: [116.35, 39.9]
                });



                map.addControl(new MapboxLanguage(), 'top-right'); //中文支持
                //注册鼠标移动事件
                map.on('mousemove', function(e) {
                    //经纬度坐标转web墨卡托
                    const earthRad = 6378137.0;
  