Introducing ArcGIS API 4 for JavaScript: Turn Awesome Maps into Awesome Apps

© Rene Rubalcava 2017

Rene Rubalcava, Introducing ArcGIS API 4 for JavaScript, https://doi.org/10.1007/978-1-4842-3282-8_4

4. API Core Fundamentals

Rene Rubalcava¹ 

(1)Rialto, California, USA

In the ArcGIS API 4 for JavaScript, there are a handful of fundamental concepts that make up how the API is built. If you get familiar with these core concepts, it will greatly benefit you when working with the API.

Accessors

An important addition to the ArcGIS API for JavaScript is the Accessor¹ module. It is located at esri/core/Accessor, which should tell you that it is a core part of the API. This is no mistake because most of the API is built on Accessors and their capabilities.

The Accessor module is loosely based on ES5 getters/setters² via the Object.defineProperty ...