This sample shows how to highlight features in a layer. Features in SceneLayer, FeatureLayer, CSVLayer, GeoRSSLayer and GraphicsLayer can be highlighted.
To highlight a feature, call the highlight method of the feature's corresponding layerView with the feature or its object as parameter. When passing features as parameters, they need to have an object.
view.whenLayerView(layer).then((layerView) => {
// if a feature is already highlighted, then remove the highlight
if (highlightSelect) {
highlightSelect.remove();
}
// set the highlight on the first feature returned by the query
highlightSelect = layerView.highlight(feature);
});