React Typescript Login and Registration example

In this tutorial, we’re gonna build a React Typescript: Login and Registration example with React Router, Axios and Bootstrap (without Redux). I will show you:

  • JWT Authentication Flow for User Signup & User Login
  • Project Structure for React Typescript Authentication (without Redux) with React Router & Axios
  • Creating React Components with Form Validation using Formik and Yup
  • React Typescript Components for accessing protected Resources (Authorization)
  • Dynamic Navigation Bar in React Typescript App

Related Posts:
In-depth Introduction to JWT-JSON Web Token
React Typescript CRUD example Project with Axios and Web API

Fullstack (JWT Authentication & Authorization example):
React + Spring Boot
React + Node Express + MySQL/PostgreSQL
React + Node Express + MongoDB

Overview of React Typescript Login example

We will build a React Typescript application in that:

  • There are Login/Logout, Signup pages.
  • Form data will be validated by front-end before being sent to back-end.
  • Depending on User’s roles (admin, moderator, user), Navigation Bar changes its items automatically.

Here are the screenshots:
– Signup Page:

react-typescript-login-example-signup

– Form Validation Support:

react-typescript-login-example-form-validation

– Login Page:

react-typescript-login-example-login

– Profile Page (for successful Login):

react-typescript-login-example-profile-page

– For Moderator account login, the navigation bar will change by authorities:

react-typescript-login-example-authorization-login

– Check Browser Local Storage:

react-typescript-login-example-localstorage

– Try to access unauthorized resource (Admin Page):

react-typescript-login-example-unauthorization

If you want to add refresh token, please visit:
React Refresh Token with JWT and Axios Interceptors

User Registration and User Login Flow

For JWT Authentication, we’re gonna call 2 endpoints:

  • POST api/auth/signup for User Registration
  • POST api/auth/signin for User Login

The following flow shows you an overview of Requests and Responses that React Typescript Login Client will make or receive from Auth Server. This Client must add a JWT to HTTP Header before sending request to protected resources.

react-typescript-login-example-flow

You can find step by step to implement these back-end servers in following tutorial:

Demo Video

This is full React + Node Express JWT Authentication & Authorization demo (with form validation, check signup username/email duplicates, test authorization with 3 roles: Admin, Moderator, User):

And this is using Spring Boot Server:

In the videos above, we use React with Javascript. But the UI and logic and are the same as the React Typescript project in this tutorial.

React Typescript Login Component Diagram

Let’s look at the diagram below.

react-typescript-login-example-project-component-overview

– The App component is a container with React Router (BrowserRouter). Basing on the state, the navbar can display its items.

Login & Register components have form for data submission (with support of formik and yup library). They call methods from auth.service to make login/register request.

auth.service uses axios to make HTTP requests. Its also store or get JWT from Browser Local Storage inside these methods.

Home component is public for all visitor.

Profile component displays user information after the login action is successful.

BoardUser, BoardModerator, BoardAdmin components will be displayed by state user.roles. In these components, we use user.service to access protected resources from Web API.

user.service uses auth-header() helper function to add JWT to HTTP header. auth-header() returns an object containing the JWT of the currently logged in user from Local Storage.

Technology

We’re gonna use these modules:

  • React 17/16
  • typescript 4.3.5
  • react-router-dom 5.2.0
  • axios 0.21.1
  • formik 2.2.9
  • Bootstrap 4
  • yup 0.32.9

Project Structure

This is folders & files structure for this React Typescript Login application:

react-typescript-login-example-project-structure

With the explanation in diagram above, you can understand the project structure easily.

Additionally, EventBus is for emitting Logout event when the Token is expired.

Setup React Typescript Login Project

Open cmd at the folder you want to save Project folder, run command:
npx create-react-app react-typescript-login-example --template typescript

Import Bootstrap to React Typescript Project

Run command:
yarn add [email protected]
– Or: npm install [email protected].

Open src/App.tsx and modify the code inside it as following-

import { Component } from "react";
import "bootstrap/dist/css/bootstrap.min.css";

class App extends Component<Props, State> {
  render() {
    // ...
  }
}

export default App;

Add React Router to React Typescript Login Project

When using Typescript with React, we don’t use Proptypes. Typescript is stronger than Propstypes.

npm has many dependencies with prefix @types/{name} such as @types/lodash, @types/react… which is easy to install and use. For this project, we use @types/react-router-dom.

– Run the command: yarn add react-router-dom @types/react-router-dom.
Or: npm install react-router-dom @types/react-router-dom.

– Open src/index.tsx and wrap App component by BrowserRouter object.

import ReactDOM from 'react-dom';
import { BrowserRouter } from "react-router-dom";

import './index.css';
import App from './App';
import reportWebVitals from './reportWebVitals';

ReactDOM.render(
  <BrowserRouter>
    <App />
  </BrowserRouter>,
  document.getElementById('root')
);

reportWebVitals();

Create Services

We’re gonna create two services in src/services folder:


services

auth-header.ts

auth.service.ts (Authentication service)

user.service.ts (Data service)


Before working with these services, we need to install Axios with command:
yarn add axios or npm install axios

Authentication service

The service uses Axios for HTTP requests and Local Storage for user information & JWT.
It provides following important methods:

  • login(): POST {username, password} & save JWT to Local Storage
  • logout(): remove JWT from Local Storage
  • register(): POST {username, email, password}
  • getCurrentUser(): get stored user information (including JWT)
import axios from "axios";

const API_URL = "http://localhost:8080/api/auth/";

class AuthService {
  login(username: string, password: string) {
    return axios
      .post(API_URL + "signin", {
        username,
        password
      })
      .then(response => {
        if (response.data.accessToken) {
          localStorage.setItem("user", JSON.stringify(response.data));
        }

        return response.data;
      });
  }

  logout() {
    localStorage.removeItem("user");
  }

  register(username: string, email: string, password: string) {
    return axios.post(API_URL + "signup", {
      username,
      email,
      password
    });
  }

  getCurrentUser() {
    const userStr = localStorage.getItem("user");
    if (userStr) return JSON.parse(userStr);

    return null;
  }
}

export default new AuthService();

Data service

We also have methods for retrieving data from server. In the case we access protected resources, the HTTP request needs Authorization header.

Let’s create a helper function called authHeader() inside auth-header.ts:

export default function authHeader() {
  const userStr = localStorage.getItem("user");
  let user = null;
  if (userStr)
    user = JSON.parse(userStr);

  if (user && user.accessToken) {
    return { Authorization: 'Bearer ' + user.accessToken };
  } else {
    return {};
  }
}

The code above checks Local Storage for user item. If there is a logged in user with accessToken (JWT), return HTTP Authorization header. Otherwise, return an empty object.


Note: For Node Express back-end, please use x-access-token header like this:

export default function authHeader() {
  const userStr = localStorage.getItem("user");
  let user = null;
  if (userStr)
    user = JSON.parse(userStr);

  if (user && user.accessToken) {
    // return { Authorization: 'Bearer ' + user.accessToken }; // for Spring Boot back-end
    return { 'x-access-token': user.accessToken };       // for Node Express back-end
  } else {
    return {};
  }
}

Now we define a service for accessing data in user.service.ts:

import axios from 'axios';
import authHeader from './auth-header';

const API_URL = 'http://localhost:8080/api/test/';

class UserService {
  getPublicContent() {
    return axios.get(API_URL + 'all');
  }

  getUserBoard() {
    return axios.get(API_URL + 'user', { headers: authHeader() });
  }

  getModeratorBoard() {
    return axios.get(API_URL + 'mod', { headers: authHeader() });
  }

  getAdminBoard() {
    return axios.get(API_URL + 'admin', { headers: authHeader() });
  }
}

export default new UserService();

You can see that we add a HTTP header with the help of authHeader() function when requesting authorized resource.

Create React Typescript Components for Authentication

In src folder, create new folder named components and add several files as following:


components

login.component.tsx

register.component.tsx

profile.component.tsx


React Typecript Form Validation overview

Now we need a library for Form validation, so we’re gonna add formik and yup library to our project.

Run the command: yarn add formik yup
Or: npm install formik yup

Import following items:

import { Formik, Field, Form, ErrorMessage } from "formik";
import * as Yup from "yup";

This is how we put them in React Component with 3 important attributes:

  • initialValues
  • validationSchema
  • onSubmit
export default class Login extends Component<Props, State> {
  ...

  validationSchema() {
    return Yup.object().shape({
      username: [Yup Schema],
      password: [Yup Schema],
    });
  }

  handleLogin(formValue: { username: string; password: string }) {
    const { username, password } = formValue;
    ...
  }

  render() {
    const initialValues = {
      username: "",
      password: "",
    };

    return (
      <Formik
        initialValues={initialValues}
        validationSchema={this.validationSchema}
        onSubmit={this.handleLogin}
      >
        <Form>
          <div>
            <label htmlFor="username">Password</label>
            <Field name="username" type="text" />
            <ErrorMessage name="username" component="div" />
          </div>

          <div>
            <label htmlFor="password">Password</label>
            <Field name="password" type="password" />
            <ErrorMessage name="password" component="div" />
          </div>

          <div>
            <button type="submit" disabled={loading}>
              Login
            </button>
          </div>
        </Form>
      </Formik>
    );
  }
}

Login Page

This page has a Form with username & password.
– We’re gonna verify them as required field.
– If the verification is ok, we call AuthService.login() method, then direct user to Profile page: this.props.history.push("/profile");, or show message with response error.

login.component.tsx

import { Component } from "react";
import { RouteComponentProps } from "react-router-dom";
import { Formik, Field, Form, ErrorMessage } from "formik";
import * as Yup from "yup";

import AuthService from "../services/auth.service";

interface RouterProps {
  history: string;
}

type Props = RouteComponentProps<RouterProps>;

type State = {
  username: string,
  password: string,
  loading: boolean,
  message: string
};

export default class Login extends Component<Props, State> {
  constructor(props: Props) {
    super(props);
    this.handleLogin = this.handleLogin.bind(this);

    this.state = {
      username: "",
      password: "",
      loading: false,
      message: ""
    };
  }

  validationSchema() {
    return Yup.object().shape({
      username: Yup.string().required("This field is required!"),
      password: Yup.string().required("This field is required!"),
    });
  }

  handleLogin(formValue: { username: string; password: string }) {
    const { username, password } = formValue;

    this.setState({
      message: "",
      loading: true
    });


    AuthService.login(username, password).then(
      () => {
        this.props.history.push("/profile");
        window.location.reload();
      },
      error => {
        const resMessage =
          (error.response &&
            error.response.data &&
            error.response.data.message) ||
          error.message ||
          error.toString();

        this.setState({
          loading: false,
          message: resMessage
        });
      }
    );
  }

  render() {
    const { loading, message } = this.state;

    const initialValues = {
      username: "",
      password: "",
    };

    return (
      <div className="col-md-12">
        <div className="card card-container">
          <img
            src="//ssl.gstatic.com/accounts/ui/avatar_2x.png"
            alt="profile-img"
            className="profile-img-card"
          />

          <Formik
            initialValues={initialValues}
            validationSchema={this.validationSchema}
            onSubmit={this.handleLogin}
          >
            <Form>
              <div className="form-group">
                <label htmlFor="username">Username</label>
                <Field name="username" type="text" className="form-control" />
                <ErrorMessage
                  name="username"
                  component="div"
                  className="alert alert-danger"
                />
              </div>

              <div className="form-group">
                <label htmlFor="password">Password</label>
                <Field name="password" type="password" className="form-control" />
                <ErrorMessage
                  name="password"
                  component="div"
                  className="alert alert-danger"
                />
              </div>

              <div className="form-group">
                <button type="submit" className="btn btn-primary btn-block" disabled={loading}>
                  {loading && (
                    <span className="spinner-border spinner-border-sm"></span>
                  )}
                  <span>Login</span>
                </button>
              </div>

              {message && (
                <div className="form-group">
                  <div className="alert alert-danger" role="alert">
                    {message}
                  </div>
                </div>
              )}
            </Form>
          </Formik>
        </div>
      </div>
    );
  }
}

Register Page

This page is similar to Login Page.

For Form Validation, there are some more details:

  • username: required, between 3 and 20 characters
  • email: required, email format
  • password: required, between 6 and 40 characters

We’re gonna call AuthService.register() method and show response message (successful or error).

register.component.tsx

import { Component } from "react";
import { Formik, Field, Form, ErrorMessage } from "formik";
import * as Yup from "yup";

import AuthService from "../services/auth.service";

type Props = {};

type State = {
  username: string,
  email: string,
  password: string,
  successful: boolean,
  message: string
};

export default class Register extends Component<Props, State> {
  constructor(props: Props) {
    super(props);
    this.handleRegister = this.handleRegister.bind(this);

    this.state = {
      username: "",
      email: "",
      password: "",
      successful: false,
      message: ""
    };
  }

  validationSchema() {
    return Yup.object().shape({
      username: Yup.string()
        .test(
          "len",
          "The username must be between 3 and 20 characters.",
          (val: any) =>
            val &&
            val.toString().length >= 3 &&
            val.toString().length <= 20
        )
        .required("This field is required!"),
      email: Yup.string()
        .email("This is not a valid email.")
        .required("This field is required!"),
      password: Yup.string()
        .test(
          "len",
          "The password must be between 6 and 40 characters.",
          (val: any) =>
            val &&
            val.toString().length >= 6 &&
            val.toString().length <= 40
        )
        .required("This field is required!"),
    });
  }

  handleRegister(formValue: { username: string; email: string; password: string }) {
    const { username, email, password } = formValue;

    this.setState({
      message: "",
      successful: false
    });

    AuthService.register(
      username,
      email,
      password
    ).then(
      response => {
        this.setState({
          message: response.data.message,
          successful: true
        });
      },
      error => {
        const resMessage =
          (error.response &&
            error.response.data &&
            error.response.data.message) ||
          error.message ||
          error.toString();

        this.setState({
          successful: false,
          message: resMessage
        });
      }
    );
  }

  render() {
    const { successful, message } = this.state;

    const initialValues = {
      username: "",
      email: "",
      password: "",
    };

    return (
      <div className="col-md-12">
        <div className="card card-container">
          <img
            src="//ssl.gstatic.com/accounts/ui/avatar_2x.png"
            alt="profile-img"
            className="profile-img-card"
          />

          <Formik
            initialValues={initialValues}
            validationSchema={this.validationSchema}
            onSubmit={this.handleRegister}
          >
            <Form>
              {!successful && (
                <div>
                  <div className="form-group">
                    <label htmlFor="username"> Username </label>
                    <Field name="username" type="text" className="form-control" />
                    <ErrorMessage
                      name="username"
                      component="div"
                      className="alert alert-danger"
                    />
                  </div>

                  <div className="form-group">
                    <label htmlFor="email"> Email </label>
                    <Field name="email" type="email" className="form-control" />
                    <ErrorMessage
                      name="email"
                      component="div"
                      className="alert alert-danger"
                    />
                  </div>

                  <div className="form-group">
                    <label htmlFor="password"> Password </label>
                    <Field
                      name="password"
                      type="password"
                      className="form-control"
                    />
                    <ErrorMessage
                      name="password"
                      component="div"
                      className="alert alert-danger"
                    />
                  </div>

                  <div className="form-group">
                    <button type="submit" className="btn btn-primary btn-block">Sign Up</button>
                  </div>
                </div>
              )}

              {message && (
                <div className="form-group">
                  <div
                    className={
                      successful ? "alert alert-success" : "alert alert-danger"
                    }
                    role="alert"
                  >
                    {message}
                  </div>
                </div>
              )}
            </Form>
          </Formik>
        </div>
      </div>
    );
  }
}

Profile Page

This page gets current User from Local Storage by calling AuthService.getCurrentUser() method and show user information (with token).

profile.component.tsx

import { Component } from "react";
import { Redirect } from "react-router-dom";
import AuthService from "../services/auth.service";
import IUser from "../types/user.type";

type Props = {};

type State = {
  redirect: string | null,
  userReady: boolean,
  currentUser: IUser & { accessToken: string }
}
export default class Profile extends Component<Props, State> {
  constructor(props: Props) {
    super(props);

    this.state = {
      redirect: null,
      userReady: false,
      currentUser: { accessToken: "" }
    };
  }

  componentDidMount() {
    const currentUser = AuthService.getCurrentUser();

    if (!currentUser) this.setState({ redirect: "/home" });
    this.setState({ currentUser: currentUser, userReady: true })
  }

  render() {
    if (this.state.redirect) {
      return <Redirect to={this.state.redirect} />
    }

    const { currentUser } = this.state;

    return (
      <div className="container">
        {(this.state.userReady) ?
          <div>
            <header className="jumbotron">
              <h3>
                <strong>{currentUser.username}</strong> Profile
              </h3>
            </header>
            <p>
              <strong>Token:</strong>{" "}
              {currentUser.accessToken.substring(0, 20)} ...{" "}
              {currentUser.accessToken.substr(currentUser.accessToken.length - 20)}
            </p>
            <p>
              <strong>Id:</strong>{" "}
              {currentUser.id}
            </p>
            <p>
              <strong>Email:</strong>{" "}
              {currentUser.email}
            </p>
            <strong>Authorities:</strong>
            <ul>
              {currentUser.roles &&
                currentUser.roles.map((role, index) => <li key={index}>{role}</li>)}
            </ul>
          </div> : null}
      </div>
    );
  }
}

Create React Typescript Components for accessing Resources

These components will use UserService to request data from API.


components

home.component.tsx

board-user.component.tsx

board-moderator.component.tsx

board-admin.component.tsx


Home Page

This is a public page that shows public content. People don’t need to log in to view this page.

home.component.tsx

import { Component } from "react";

import UserService from "../services/user.service";

type Props = {};

type State = {
  content: string;
}

export default class Home extends Component<Props, State> {
  constructor(props: Props) {
    super(props);

    this.state = {
      content: ""
    };
  }

  componentDidMount() {
    UserService.getPublicContent().then(
      response => {
        this.setState({
          content: response.data
        });
      },
      error => {
        this.setState({
          content:
            (error.response && error.response.data) ||
            error.message ||
            error.toString()
        });
      }
    );
  }

  render() {
    return (
      <div className="container">
        <header className="jumbotron">
          <h3>{this.state.content}</h3>
        </header>
      </div>
    );
  }
}

Role-based Pages

We’re gonna have 3 pages for accessing protected data:

  • BoardUser page calls UserService.getUserBoard()
  • BoardModerator page calls UserService.getModeratorBoard()
  • BoardAdmin page calls UserService.getAdminBoard()

I will show you User Page for example, other Pages are similar to this Page.

board-user.component.tsx

import { Component } from "react";

import UserService from "../services/user.service";

type Props = {};

type State = {
  content: string;
}

export default class BoardUser extends Component<Props, State> {
  constructor(props: Props) {
    super(props);

    this.state = {
      content: ""
    };
  }

  componentDidMount() {
    UserService.getUserBoard().then(
      response => {
        this.setState({
          content: response.data
        });
      },
      error => {
        this.setState({
          content:
            (error.response &&
              error.response.data &&
              error.response.data.message) ||
            error.message ||
            error.toString()
        });
      }
    );
  }

  render() {
    return (
      <div className="container">
        <header className="jumbotron">
          <h3>{this.state.content}</h3>
        </header>
      </div>
    );
  }
}

Add Navbar and define Routes

Now we add a navigation bar in App component. This is the root container for our application.
The navbar dynamically changes by login status and current User’s roles.

  • Home: always
  • Login & Sign Up: if user hasn’t signed in yet
  • User: AuthService.getCurrentUser() returns a value
  • Board Moderator: roles includes ROLE_MODERATOR
  • Board Admin: roles includes ROLE_ADMIN

src/App.tsx

import { Component } from "react";
import { Switch, Route, Link } from "react-router-dom";
import "bootstrap/dist/css/bootstrap.min.css";
import "./App.css";

import AuthService from "./services/auth.service";
import IUser from './types/user.type';

import Login from "./components/login.component";
import Register from "./components/register.component";
import Home from "./components/home.component";
import Profile from "./components/profile.component";
import BoardUser from "./components/board-user.component";
import BoardModerator from "./components/board-moderator.component";
import BoardAdmin from "./components/board-admin.component";

import EventBus from "./common/EventBus";

type Props = {};

type State = {
  showModeratorBoard: boolean,
  showAdminBoard: boolean,
  currentUser: IUser | undefined
}

class App extends Component<Props, State> {
  constructor(props: Props) {
    super(props);
    this.logOut = this.logOut.bind(this);

    this.state = {
      showModeratorBoard: false,
      showAdminBoard: false,
      currentUser: undefined,
    };
  }

  componentDidMount() {
    const user = AuthService.getCurrentUser();

    if (user) {
      this.setState({
        currentUser: user,
        showModeratorBoard: user.roles.includes("ROLE_MODERATOR"),
        showAdminBoard: user.roles.includes("ROLE_ADMIN"),
      });
    }

    EventBus.on("logout", this.logOut);
  }

  componentWillUnmount() {
    EventBus.remove("logout", this.logOut);
  }

  logOut() {
    AuthService.logout();
    this.setState({
      showModeratorBoard: false,
      showAdminBoard: false,
      currentUser: undefined,
    });
  }

  render() {
    const { currentUser, showModeratorBoard, showAdminBoard } = this.state;

    return (
      <div>
        <nav className="navbar navbar-expand navbar-dark bg-dark">
          <Link to={"/"} className="navbar-brand">
            bezKoder
          </Link>
          <div className="navbar-nav mr-auto">
            <li className="nav-item">
              <Link to={"/home"} className="nav-link">
                Home
              </Link>
            </li>

            {showModeratorBoard && (
              <li className="nav-item">
                <Link to={"/mod"} className="nav-link">
                  Moderator Board
                </Link>
              </li>
            )}

            {showAdminBoard && (
              <li className="nav-item">
                <Link to={"/admin"} className="nav-link">
                  Admin Board
                </Link>
              </li>
            )}

            {currentUser && (
              <li className="nav-item">
                <Link to={"/user"} className="nav-link">
                  User
                </Link>
              </li>
            )}
          </div>

          {currentUser ? (
            <div className="navbar-nav ml-auto">
              <li className="nav-item">
                <Link to={"/profile"} className="nav-link">
                  {currentUser.username}
                </Link>
              </li>
              <li className="nav-item">
                <a href="/login" className="nav-link" onClick={this.logOut}>
                  LogOut
                </a>
              </li>
            </div>
          ) : (
            <div className="navbar-nav ml-auto">
              <li className="nav-item">
                <Link to={"/login"} className="nav-link">
                  Login
                </Link>
              </li>

              <li className="nav-item">
                <Link to={"/register"} className="nav-link">
                  Sign Up
                </Link>
              </li>
            </div>
          )}
        </nav>

        <div className="container mt-3">
          <Switch>
            <Route exact path={["/", "/home"]} component={Home} />
            <Route exact path="/login" component={Login} />
            <Route exact path="/register" component={Register} />
            <Route exact path="/profile" component={Profile} />
            <Route path="/user" component={BoardUser} />
            <Route path="/mod" component={BoardModerator} />
            <Route path="/admin" component={BoardAdmin} />
          </Switch>
        </div>

        { /*<AuthVerify logOut={this.logOut}/> */}
      </div>
    );
  }
}

export default App;

Logout when the Token is expired

There are two ways. For more details, please visit:
React – How to Logout when JWT Token is expired

Add CSS style for React Typescript Components

Open src/App.css and write some CSS code as following:

label {
  display: block;
  margin-top: 10px;
}

.card-container.card {
  max-width: 350px !important;
  padding: 40px 40px;
}

.card {
  background-color: #f7f7f7;
  padding: 20px 25px 30px;
  margin: 0 auto 25px;
  margin-top: 50px;
  -moz-border-radius: 2px;
  -webkit-border-radius: 2px;
  border-radius: 2px;
  -moz-box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.3);
  -webkit-box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.3);
  box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.3);
}

.profile-img-card {
  width: 96px;
  height: 96px;
  margin: 0 auto 10px;
  display: block;
  -moz-border-radius: 50%;
  -webkit-border-radius: 50%;
  border-radius: 50%;
}

Configure Port for React Typescript Login with Web API

Because most of HTTP Server use CORS configuration that accepts resource sharing retrictted to some sites or ports, so we also need to configure port for our App.

In project folder, create .env file with following content:

PORT=8081

Now we’ve set our app running at port 8081. You will need to do this work if you use one of following Servers:

Conclusion

Congratulation!

Today we’ve done so many interesting things. I hope you understand the overall layers of our React Typescript Login and Registration Application (without Redux) using LocalStorage, React Router, Axios, Bootstrap. Now you can apply it in your project at ease.

You should continue to check if Token is expired and logout:
React – How to Logout when JWT Token is expired

Or add refresh token:
React Refresh Token with JWT and Axios Interceptors

If you want to use React Hooks for this example, you can find the implementation at:
React Hooks: JWT Authentication (without Redux) example

Or using Redux for state management:
React Redux: JWT Authentication & Authorization example

Happy learning, see you again!

Further Reading

Fullstack CRUD:
React + Spring Boot + MySQL
React + Spring Boot + PostgreSQL
React + Spring Boot + MongoDB
React + Node Express + MySQL
React + Node Express + PostgreSQL
React + Node Express + MongoDB
React + Django

Serverless with Firebase:
React Typescript Firebase CRUD with Realtime Database
React Typescript Firestore CRUD example with Cloud Firestore

Source Code

You can find the complete source code for this example on Github.

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