title	description	author	manager	ms.author	ms.custom	ms.date	ms.reviewer	ms.service	ms.topic
Quickstart: Sign in to a SPA & call an API - React	In this quickstart, learn how a JavaScript React single-page application (SPA) can sign in users of personal accounts, work accounts, and school accounts by using the authorization code flow and call Microsoft Graph.	henrymbuguakiarie	CelesteDG	henrymbugua	scenarios:getting-started, languages:JavaScript, devx-track-js	12/13/2023	emilylauber	identity-platform	quickstart

Quickstart: Sign in users in a single-page app (SPA) and call the Microsoft Graph API using React

This quickstart uses a sample React single-page app (SPA) to show you how to sign in users by using the authorization code flow with Proof Key for Code Exchange (PKCE). The sample uses the Microsoft Authentication Library for JavaScript to handle authentication.

Prerequisites

An Azure account with an active subscription. If you don't already have one, Create an account for free.
Node.js
Visual Studio 2022 or Visual Studio Code

To obtain the sample application, you can either clone it from GitHub or download it as a .zip file.

To clone the sample, open a command prompt and navigate to where you wish to create the project, and enter the following command:
```
git clone https://github.com/Azure-Samples/ms-identity-docs-code-javascript.git
```
Download the .zip file. Extract it to a file path where the length of the name is fewer than 260 characters.

In your IDE, open the project folder, ms-identity-docs-code-javascript/react-spa, containing the sample.
Open src/authConfig.js and update the following values with the information recorded earlier in the admin center.

:::code language="JavaScript" source="~/../ms-identity-docs-code-javascript/react-spa/src/authConfig.js":::
- clientId - The identifier of the application, also referred to as the client. Replace the text in quotes with the Application (client) ID value that was recorded earlier.
- authority - The authority is a URL that indicates a directory that MSAL can request tokens from. Replace Enter_the_Tenant_Info_Here with the Directory (tenant) ID value that was recorded earlier.
- redirectUri - The Redirect URI of the application. If necessary, replace the text in quotes with the redirect URI that was recorded earlier.

Run the project with a web server by using Node.js:

To start the server, run the following commands from within the project directory:
```
npm install
npm start
```
Copy the https URL that appears in the terminal, for example, https://localhost:3000, and paste it into a browser. We recommend using a private or incognito browser session.
Follow the steps and enter the necessary details to sign in with your Microsoft account. You'll be requested an email address so a one time passcode can be sent to you. Enter the code when prompted.
The application will request permission to maintain access to data you have given it access to, and to sign you in and read your profile. Select Accept. The following screenshot appears, indicating that you have signed in to the application and have accessed your profile details from the Microsoft Graph API.

:::image type="content" source="./media/common-spa/react-spa/display-api-call-results-react-spa.png" alt-text="Screenshot of JavaScript App depicting the results of the API call." lightbox="./media/common-spa/react-spa/display-api-call-results-react-spa.png":::

Find the Sign out button in the top right corner of the page, and select it.
You'll be prompted to pick an account to sign out from. Select the account you used to sign in.

A message appears indicating that you have signed out. You can now close the browser window.