Build cool GIS Web Applications using the new ArcGIS Javascript API 4.x. In this series, we build a complete map viewer from scratch. Learn the new ArcGIS Javascript API 4.9 by building a cool web mapping application from scratch. This tutorial has more than 30 episodes of engaging by example where we build a map viewer that works with any ArcGIS service
Github repo: https://github.com/hnasr/jsapi4x/issues