Display a custom basemap style

1. Go to the Display a map tutorial and download the solution.
2. Unzip the folder and open it in a text editor of your choice, such as Visual Studio Code. The starter app includes the following:
   • callback.html: This contains callback as part of the authentication process.
   • index.html: This contains app logic and the OAuth 2.0 code necessary to perform the authentication.

Create a new OAuth credential to register the application.

1. Go to the Create OAuth credentials for user authentication tutorial to create an OAuth credential.
2. Copy the Client ID and Redirect URL from your OAuth credentials item and paste them to a safe location. They will be used in a later step.

1. In both the index.html and callback.html files, replace YOUR_CLIENT_ID and YOUR_REDIRECT_URL with the client ID and redirect URL of your OAuth credentials.

   index.html

   Use dark colors for code blocks

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       /* Use for user authentication */
       const clientId = "YOUR_CLIENT_ID"; // Your client ID from OAuth credentials
       const redirectUri = "YOUR_REDIRECT_URI"; // The redirect URL registered in your OAuth credentials
       const session = await arcgisRest.ArcGISIdentityManager.beginOAuth2({
         clientId,
         redirectUri,
         portal: "https://www.arcgis.com/sharing/rest" // Your portal URL
       })
   
       const accessToken = session.token;
   
   callback.html

   Use dark colors for code blocks

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       arcgisRest.ArcGISIdentityManager.completeOAuth2({
         clientId: "YOUR_CLIENT_ID", // Your client ID from OAuth credentials
         redirectUri: "YOUR_REDIRECT_URI", // The redirect URL registered in your OAuth credentials
         portal: "https://www.arcgis.com/sharing/rest" // Your portal URL
       })
   

2. Run the app and ensure you can sign in successfully.

   Trouble signing in?

   If you are unable to sign in, make sure you have the correct redirect URL and port. This URL varies based on your application and typically takes the format of https://<server>[:port]/callback.html or http://my-arcgis-app:/auth. For example, if you are running an application on http://127.0.0.1:5500/, set http://127.0.0.1:5500/callback.html as your redirect URL in the index.html and callback.html file and your developer credential. They all have to match!