Uploaded February 2026 | Updated September 2026, 2 weeks ago
In this React POS App tutorial (Part 19), we will learn how to fetch single user data from the backend API and automatically load it into the Edit User form inside our React Point of Sale (POS) System. This is an important feature for any React CRUD project, because editing user records requires pre-filling existing data from the database.
First, we will work on the frontend React.js project, where we create a fetchUser() async function inside the Edit User component. Using Axios API integration, we send a secure GET request with a JWT authentication token stored in localStorage. After receiving the response, we update the React state values such as username, email, and status, so the form inputs are filled automatically. We also manage loading and error handling properly.
Next, we will implement the backend logic using Node.js, Express.js, and MySQL database integration. In the user routes file, we create a protected API endpoint using authenticateToken middleware and admin validation middleware. We also validate the user ID using express-validator, then fetch user details from MySQL and return the data as a JSON response.
By the end of this tutorial, your React POS system using Node.js will successfully fetch and display user data inside the edit form.
📌 Perfect for beginners learning React JS Node JS Express MySQL full stack development.
For Source Code - webslesson.info/2026/01/react-pos-system-nodejs-mysql.html
In this React POS App tutorial (Part 19), we will learn how to fetch single user data from the backend API and automatically load it into the Edit User form inside our React Point of Sale (POS) System. This is an important feature for any React CRUD project, because editing user records requires pre-filling existing data from the database.
First, we will work on the frontend React.js project, where we create a fetchUser() async function inside the Edit User component. Using Axios API integration, we send a secure GET request with a JWT authentication token stored in localStorage. After receiving the response, we update the React state values such as username, email, and status, so the form inputs are filled automatically. We also manage loading and error handling properly.
Next, we will implement the backend logic using Node.js, Express.js, and MySQL database integration. In the user routes file, we create a protected API endpoint using authenticateToken middleware and admin validation middleware. We also validate the user ID using express-validator, then fetch user details from MySQL and return the data as a JSON response.
By the end of this tutorial, your React POS system using Node.js will successfully fetch and display user data inside the edit form.
📌 Perfect for beginners learning React JS Node JS Express MySQL full stack development.
For Source Code - webslesson.info/2026/01/react-pos-system-nodejs-mysql.html
