This is a free download and works well with TypeScript. In the screen capture below, Visual Studio Code is used.

As long as you have access to the compiler needed to generate the underlying JavaScript files, any IDE should work.Ĭreate a new directory to contain all the widget files. There is no one-specific IDE required for writing TypeScript. Create project directory and file structure

Add dependency paths and import statementsġ.

Install the ArcGIS API for JavaScript 4.x Type Definitions More information on these requirements can be found at: Lastly, widget development is largely reliant upon familiarity of Implementing Accessor. This allows you to define the widget's UI similarly to HTML. In addition to this, you should also be familiar with JSX. Any text editor should suffice as long as you are able to compile the resulting TypeScript code into a resulting JavaScript file. In order to follow the steps below, you will need to make certain you have TypeScript installed. Widget development is written in TypeScript and compiled to JavaScript. The steps to implement this are discussed below.įor the full code, please refer to this link for Source code and click on the drop down for various files.

In addition to this basic 'HelloWorld' sample, the application also shows how to work with message bundles to display localized strings within the widget. This sample describes how to implement and create a custom widget. These steps are provided as a basic foundation needed when creating your own custom widget. In addition, this sample also shows how you can work with your own localized message bundles within a custom widget. The following steps go through creating a very basic 'Hello World' widget. In these cases, a custom widget may be what is needed. There may be circumstances where you may need to customize a widget to your own specifications. The API provides ready-to-use widgets with predefined functionality. Typically, a widget is thought of as a piece of the API that encapsulates a specific set of functionality. Working with widgets is an essential part of the ArcGIS API for JavaScript.

Zooper widget template folder