Microsoft Authentication Library Preview for JavaScript (MSAL.js)

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The MSAL library preview for JavaScript enables your app to authorize enterprise users using Microsoft Azure Active Directory (AAD), Microsoft account users (MSA), users using social identity providers like Facebook, Google, LinkedIn etc. and get access to Microsoft Cloud OR Microsoft Graph.

The identity management services that the library interacts with are Microsoft Azure Active Directory, Microsoft Azure B2C and Microsoft Accounts.

Important Note about the MSAL Preview

This library is suitable for use in a production environment. We provide the same production level support for this library as we do our current production libraries. During the preview we may make changes to the API, internal cache format, and other mechanisms of this library, which you will be required to take along with bug fixes or feature improvements. This may impact your application. For instance, a change to the cache format may impact your users, such as requiring them to sign in again. An API change may require you to update your code. When we provide the General Availability release we will require you to update to the General Availability version within six months, as applications written using a preview version of library may no longer work.

Example

This example shows how to acquire a token to read user information from Microsoft Graph.

Register an application in Azure AD v2.0 (using the application registration portal) to get your client_id. you will also need to add the Web platform, check the "Implicit Flow" checkbox, and add the redirectURI to your application.
Instantiate a UserAgentApplication and login the user:

    <script class="pre">
        var userAgentApplication = new Msal.UserAgentApplication("your_client_id", null, function (errorDes, token, error, tokenType) {
              // this callback is called after loginRedirect OR acquireTokenRedirect (not used for loginPopup/aquireTokenPopup)
        })
        userAgentApplication.loginPopup(["user.read"]).then( function(token) {
            var user = userAgentApplication.getUser();
            // signin successful
        }, function (error) {
            // handle error
        });
    </script>

Then, once the user is logged-in, get an access token

   <script>
          // get an access token
          userAgentApplication.acquireTokenSilent(["user.read"]).then(function (token) {
            console.log("ATS promise resolved");
          }, function (error) {
            // interaction required 
            if(error.indexOf("interaction_required" != -1)) {
                userAgentApplication.acquireTokenPopup(["user.read"]).then(function (token) {
                // success
              }, function (error) {
                // error
               });
            }
          });
    </script>

use the token in an HTTP bearer request, to call the Microsoft Graph or a Web API

Installation

Via NPM:

npm install msal

Via CDN:

    <!-- Latest compiled and minified JavaScript -->
    <script src="https://secure.aadcdn.microsoftonline-p.com/lib/0.1.1/js/msal.min.js"></script>

Note that msal.js is built for ES5, therefore enabling support of Internet Explorer 11. If you want to target Internet Explorer, you'll need to add a reference to promises polyfill. You might want to read more in the FAQ

    <!-- IE support: add promises polyfill before msal.js  -->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/bluebird/3.3.4/bluebird.min.js" class="pre"></script> 
    <script src="https://secure.aadcdn.microsoftonline-p.com/lib/0.1.1/js/msal.min.js"></script>

Community Help and Support

FAQ for access to our frequently asked questions
Stack Overflow using tag MSAL. We highly recommend you ask your questions on Stack Overflow first and browse existing issues to see if someone has asked your question before.
GitHub Issues for reporting an bug or feature requests
User Voice page to provide recommendations and/or feedback

Contribute

We enthusiastically welcome contributions and feedback. You can clone the repo and start contributing now. Read our Contribution Guide for more information.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.

Security Library

This library controls how users sign-in and access services. We recommend you always take the latest version of our library in your app when possible. We use semantic versioning so you can control the risk associated with updating your app. As an example, always downloading the latest minor version number (e.g. x.y.x) ensures you get the latest security and feature enhanements but our API surface remains the same. You can always see the latest version and release notes under the Releases tab of GitHub.

Security Reporting

If you find a security issue with our libraries or services please report it to secure@microsoft.com with as much detail as possible. Your submission may be eligible for a bounty through the Microsoft Bounty program. Please do not post security issues to GitHub Issues or any other public site. We will contact you shortly upon receiving the information. We encourage you to get notifications of when security incidents occur by visiting this page and subscribing to Security Advisory Alerts.

License

We Value and Adhere to the Microsoft Open Source Code of Conduct