在代码中添加以下语句即可解决该问题:
// 创建map对象
var map = new Map({
basemap: 'streets-navigation-vector'
});
// 创建一个FeatureLayer对象
var featureLayer = new FeatureLayer({
url: 'https://sampleserver6.arcgisonline.com/arcgis/rest/services/Earthquakes_Since1970/MapServer/0'
});
// 添加FeatureLayer到map对象
map.add(featureLayer);
// 使用MapView或SceneView显示map对象
var view = new MapView({
container: 'viewDiv',
map: map,
zoom: 3,
center: [-98, 38]
});