Single-page application: Call a web API

Applies to: Workforce tenants External tenants (learn more)

We recommend that you call the acquireTokenSilent method to acquire or renew an access token before calling a web API. After you have a token, you can call a protected web API.

Call a web API

JavaScript

Use the acquired access token as a bearer in an HTTP request to call any web API, such as Microsoft Graph API. For example:

    var headers = new Headers();
    var bearer = "Bearer " + access_token;
    headers.append("Authorization", bearer);
    var options = {
         method: "GET",
         headers: headers
    };
    var graphEndpoint = "https://graph.microsoft.com/v1.0/me";

    fetch(graphEndpoint, options)
        .then(function (response) {
             //do something with response
        })

Angular

The MSAL Angular wrapper takes advantage of the HTTP interceptor to automatically acquire access tokens silently and attach them to the HTTP requests to APIs. For more information, see Acquire a token to call an API.

Next steps

• Learn more by building a React Single-page application (SPA) that signs in users in the following multi-part tutorial series.
• Explore Microsoft identity platform single-page application code samples