How do I implement JWT authentication in my React app?

How do I implement JWT authentication in my React app?

To implement JWT authentication in your React app, you need to follow these steps: 1. Set up a backend server to issue JWTs. 2. Create a login form in your React app. 3. Send a request to the server with user credentials. 4. Store the received JWT in local storage or cookies. 5. Use the JWT for authenticated requests.

What libraries do I need to use for this?

You can use libraries like Axios for making HTTP requests and jsonwebtoken for handling JWTs on the server side. For React, you might also consider using React Router for managing routes.

How do I protect my routes in React?

To protect your routes, you can create a higher-order component (HOC) that checks if the user is authenticated by verifying the JWT. If not authenticated, redirect them to the login page.

Can you show me an example of the HOC?

Sure! Here's a simple example:

import React from 'react';
import { Redirect } from 'react-router-dom';

const withAuth = (WrappedComponent) => {
  return (props) => {
    const token = localStorage.getItem('token');
    if (!token) {
      return <Redirect to='/login' />;
    }
    return <WrappedComponent {...props} />;
  };
};

This HOC checks for a token and redirects if it's not found.