Note: this is a downloaded and locally hosted version of the documentation for ArcGIS API for JavaScript version 4.9. The most current documentation is available at js.arcgis.com.
Build 2D and 3D web apps!
The 4.x series of the ArcGIS API for JavaScript integrates 2D and 3D into a single, easy-to-use, powerful mapping API. Create 3D maps as easily as 2D maps, seamlessly integrate your web GIS and build influential data-driven visualizations.
Learn about 4.9// Reference the JavaScript API from our CDN and you are ready to get started:
<link rel="stylesheet" href="https://js.arcgis.com/4.9/esri/css/main.css">
<script src="https://js.arcgis.com/4.9/"></script>
Need to build a full-featured 2D web app with capabilities such as editing and support for all existing layer types?
Go to 3.26Build a great user experience
The API provides the tools for you to build a great user experience that will work well with any screen size.