@auth0/auth0-spa-js

What is @auth0/auth0-spa-js?

@auth0/auth0-spa-js is a JavaScript library designed to handle authentication in single-page applications (SPAs) using Auth0. It provides a simple and secure way to integrate Auth0's authentication and authorization services into your SPA.

What are @auth0/auth0-spa-js's main functionalities?

Login

This feature allows users to log in to your application using Auth0. The code sample demonstrates how to create an Auth0 client and initiate a login redirect.

const auth0 = await createAuth0Client({
  domain: 'YOUR_DOMAIN',
  client_id: 'YOUR_CLIENT_ID'
});

await auth0.loginWithRedirect({
  redirect_uri: window.location.origin
});

Logout

This feature allows users to log out of your application. The code sample shows how to log out and redirect the user to the home page.

await auth0.logout({
  returnTo: window.location.origin
});

Get User Information

This feature retrieves the authenticated user's information. The code sample demonstrates how to get the user profile after authentication.

const user = await auth0.getUser();
console.log(user);

Token Handling

This feature handles token retrieval for authenticated requests. The code sample shows how to get an access token silently without redirecting the user.

const token = await auth0.getTokenSilently();
console.log(token);

Other packages similar to @auth0/auth0-spa-js

oidc-client

oidc-client is a JavaScript library for OpenID Connect (OIDC) and OAuth2. It provides similar functionalities for handling authentication and authorization in SPAs. Compared to @auth0/auth0-spa-js, oidc-client is more generic and can be used with any OIDC-compliant identity provider.

firebase

Firebase Authentication provides backend services to help authenticate users in your application. It supports various authentication methods, including email/password, phone, and social providers. Unlike @auth0/auth0-spa-js, Firebase offers a broader range of services beyond authentication, such as database and hosting.

README

📚 Documentation - 🚀 Getting Started - 💻 API Reference - 💬 Feedback

Documentation

• Quickstart - our interactive guide for quickly adding login, logout and user information to your app using Auth0.
• Sample app - a full-fledged sample app integrated with Auth0.
• FAQs - frequently asked questions about auth0-spa-js SDK.
• Examples - code samples for common scenarios.
• Docs Site - explore our Docs site and learn more about Auth0.

Getting Started

Installation

Using npm in your project directory run the following command:

npm install @auth0/auth0-spa-js

From the CDN:

<script src="https://cdn.auth0.com/js/auth0-spa-js/2.1/auth0-spa-js.production.js"></script>

Configure Auth0

Create a Single Page Application in the Auth0 Dashboard.

If you're using an existing application, verify that you have configured the following settings in your Single Page Application:

• Click on the "Settings" tab of your application's page.
• Scroll down and click on the "Show Advanced Settings" link.
• Under "Advanced Settings", click on the "OAuth" tab.
• Ensure that "JsonWebToken Signature Algorithm" is set to RS256 and that "OIDC Conformant" is enabled.

Next, configure the following URLs for your application under the "Application URIs" section of the "Settings" page:

• Allowed Callback URLs: http://localhost:3000
• Allowed Logout URLs: http://localhost:3000
• Allowed Web Origins: http://localhost:3000

These URLs should reflect the origins that your application is running on. Allowed Callback URLs may also include a path, depending on where you're handling the callback (see below).

Take note of the Client ID and Domain values under the "Basic Information" section. You'll need these values in the next step.

Configure the SDK

Create an Auth0Client instance before rendering or initializing your application. You should only have one instance of the client.

import { createAuth0Client } from '@auth0/auth0-spa-js';

//with async/await
const auth0 = await createAuth0Client({
  domain: '<AUTH0_DOMAIN>',
  clientId: '<AUTH0_CLIENT_ID>',
  authorizationParams: {
    redirect_uri: '<MY_CALLBACK_URL>'
  }
});

//or, you can just instantiate the client on its own
import { Auth0Client } from '@auth0/auth0-spa-js';

const auth0 = new Auth0Client({
  domain: '<AUTH0_DOMAIN>',
  clientId: '<AUTH0_CLIENT_ID>',
  authorizationParams: {
    redirect_uri: '<MY_CALLBACK_URL>'
  }
});

//if you do this, you'll need to check the session yourself
try {
  await auth0.getTokenSilently();
} catch (error) {
  if (error.error !== 'login_required') {
    throw error;
  }
}

Logging In

You can then use login using the Auth0Client instance you created:

<button id="login">Click to Login</button>

//redirect to the Universal Login Page
document.getElementById('login').addEventListener('click', async () => {
  await auth0.loginWithRedirect();
});

//in your callback route (<MY_CALLBACK_URL>)
window.addEventListener('load', async () => {
  const redirectResult = await auth0.handleRedirectCallback();
  //logged in. you can get the user profile like this:
  const user = await auth0.getUser();
  console.log(user);
});

For other comprehensive examples, see the EXAMPLES.md document.

API Reference

Explore API Methods available in auth0-spa-js.

• Configuration Options

• Auth0Client

• createAuth0Client

Feedback

Contributing

We appreciate feedback and contribution to this repo! Before you get started, please see the following:

• Auth0's general contribution guidelines
• Auth0's code of conduct guidelines
• This repo's contribution guide

Raise an issue

To provide feedback or report a bug, please raise an issue on our issue tracker.

Vulnerability Reporting

Please do not report security vulnerabilities on the public GitHub issue tracker. The Responsible Disclosure Program details the procedure for disclosing security issues.

What is Auth0?

Auth0 is an easy to implement, adaptable authentication and authorization platform. To learn more checkout Why Auth0?

This project is licensed under the MIT license. See the LICENSE file for more info.