Do we need "Developer" licensing to create JavaScript Applications with the ArcGIS Enterprise Software?

[RYANCARL]

Do we need "Developer" licensing from https://developers.arcgis.com/  to create JavaScript Applications with the ArcGIS Enterprise Software?

I am running the Enterprise software and have it all working the next step is creating a web mapping application that will go further then the ability of the Web Application Builder provided by the Portal. 

My question is do we need to license the developer JavaScript library to accomplish this? Is there no developer equivalent features provided in the Enterprise suite of things (API tokens needed to run the ArcGIS JSAPI)? 

[BjornSvensson]

If you have an ArcGIS Online Organization or ArcGIS Enterprise, no additional purchase is required to use the ArcGIS API for JavaScript.

As per https://developers.arcgis.com/javascript/latest/licensing/

[RYANCARL]

When attempting to get the JS API up and running accessing a Web Map that we have in our Enterprise Portal it seemed to fail and nothing would load.

This is probably an issue in out configuration.

Would it be possible link me to an example of accessing an ArcGIS Enterprise Portal Web Map from the ArcGIS JS API? The examples that I have found are mainly using AGOL.

[BjornSvensson · Accepted solution]

The second example on https://developers.arcgis.com/javascript/latest/api-reference/esri-WebMap.html shows how to use a different "portal" than ArcGIS Online using esriConfig.portalUrl

[RYANCARL]

Thank you