arcgis api for js4.x实现点击GraphicsLayer上绘制的Graphic获取Graphic中的attributes中的信息

需求：arcgis api for js4.x
在Map地图中添加GraphicsLayer图层，在GraphicsLayer图层添加绘制graphics点，点击绘制的点，获取graphics点中的attributes中的信息

var cityCenter = new Point(116, 36, new SpatialReference({ wkid: 4490 }));
var map = new Map({basemap: {baseLayers: [layer1]},layers:[layer2,layer3]
});
//视图
var view = new MapView({container: "viewDiv",map: map,center: cityCenter,zoom: 12,
});
//创建一个图层
var graphicsLayer = new GraphicsLayer({graphics: [],visible: true,id:"layerid"
});
//创建要素graphic
var graphic = new Graphic({geometry: point,symbol: symbol,attributes:{'aa':'aaaa','bb':'bbbb'}
});
//添加要素
graphicsLayer.graphics.add(graphic)view.on("click", (event) => {view.hitTest(event).then(function(response) {if (response.results.length) {var graphic = response.results.filter(function(result) {// check if the graphic belongs to the layer of interestreturn result.graphic.layer.id === 'layerid';})[0].graphic;console.log(graphic.attributes);//获取graphic中的attributes}})
})

参考：arcgis api for js4.x实现点击图层上的绘制的Graphics点，弹出点信息。_accessor#set invalid property value, value needs t-CSDN博客