要素微件

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// Provide graphic to a new instance of a Feature widget
const feature = new Feature({
  graphic: graphic,
  map: view.map,
  spatialReference: view.spatialReference
});

view.ui.add(feature, "bottom-left");

view.whenLayerView(fLayer).then((layerView) => {
  let highlight;
  let objectId;

  const debouncedUpdate = promiseUtils.debounce((event) => {
  // Perform a hitTest on the View
    view.hitTest(event)
      .then((event) => {
        // Make sure graphic has a popupTemplate
          const results = event.results.filter((result) => {
            return result.graphic.layer.popupTemplate;
          });

          const result = results[0];
          const newObjectId = result && result.graphic.attributes[fLayer.objectIdField];

          if (!newObjectId) {
            highlight && highlight.remove();
            objectId = feature.graphic = null;
          } else if (objectId !== newObjectId) {
            highlight && highlight.remove();
            objectId = newObjectId;
            feature.graphic = result.graphic;
            highlight = layerView.highlight(result.graphic);
          }
        })
    });

    // Listen for the pointer-move event on the View
    // and make sure that function is not invoked more
    // than one at a time
    view.on("pointer-move", (event) => {
      debouncedUpdate(event).catch((err) => {
        if (!promiseUtils.isAbortError(err)) {
          throw err;
        }
      });
    });
});