Edit features with the Editor widget

Realistic water visualization in 3D

Import glTF 3D Models

Dot density

GeoJSONLayer

SceneLayerView - query statistics by geometry

Intro to CSVLayer

Reference Arcade expressions in PopupTemplate

Line of sight widget

ImageryLayer - client side pixel filter

Animate opacity visual variable

CSVLayer - Project points on the fly

You can also download the ArcGIS API for JavaScript 4.14 single archive with all samples.