To create a custom form using Frappe and React.js, you would typically follow these steps:

Real-life Example:

1. Set up a Frappe App: If you haven't already, create a Frappe app or use an existing one as your backend. Frappe provides the backend functionality, including database management and APIs.

2. Define a DocType: In your Frappe app, define a DocType to represent your custom form. This defines the structure of your form, including fields and their properties.

3. Create React.js Frontend: Develop a frontend application using React.js. This frontend will interact with your Frappe backend through APIs.

4. Set up API Endpoints: In your Frappe app, create custom API endpoints to handle requests from your React.js frontend. These endpoints will handle actions such as fetching form data, submitting form data, etc.

5. Fetch Data from Frappe Backend: In your React.js frontend, use AJAX requests or libraries like Axios to fetch data from your Frappe backend. You can fetch data for populating dropdowns, retrieving existing form data, etc.

6. Display Form Fields: Use React.js components to render form fields based on the structure defined in your Frappe DocType. You can use libraries like Formik or React Hook Form for managing form state and validation.

7. Submit Form Data: Implement functionality to submit form data back to your Frappe backend. Send a POST request to your custom API endpoint with the form data.

8. Handle Responses: Handle responses from your Frappe backend in your React.js frontend. You can display success or error messages to the user based on the response received.

9. Test and Debug: Test your form thoroughly to ensure that it behaves as expected. Debug any issues that arise during testing.

10. Deploy: Once you're satisfied with your form, deploy both your Frappe backend and React.js frontend to a production environment.

Throughout this process, refer to the Frappe documentation and React.js documentation as needed for guidance on using these frameworks effectively.

Here's a very basic example of how your React.js component might look to fetch and display form data from a Frappe backend:

import React, { useState, useEffect } from 'react';
import axios from 'axios';

const MyFormComponent = () => {
  const [formData, setFormData] = useState({});

  useEffect(() => {
    fetchData();
  }, []);

  const fetchData = async () => {
    try {
      const response = await axios.get('YOUR_FRAPPE_API_ENDPOINT');
      setFormData(response.data);
    } catch (error) {
      console.error('Error fetching form data:', error);
    }
  };

  return (
    <div>
      <h2>My Form</h2>
      <form>
        <label>Name:</label>
        <input type="text" value={formData.name} disabled />
        <label>Email:</label>
        <input type="email" value={formData.email} disabled />
        {/* Other form fields */}
        <button type="submit">Submit</button>
      </form>
    </div>
  );
};

export default MyFormComponent;

This code fetches form data from a Frappe backend when the component mounts using useEffect, and displays it in the form fields. Note that you'll need to replace 'YOUR_FRAPPE_API_ENDPOINT' with the actual endpoint URL for fetching your form data. Additionally, you'll need to handle form submission and any other form interactions based on your specific requirements.

github
website

Array methods in react.js
Fragment in react.js
Conditional rendering in react.js
Children component in react.js
use of Async/Await in react.js
Array methods in react.js
JSX in react.js
Event Handling in react.js
Arrow function in react.js
Virtual DOM in react.js
React map() in react.js
How to create dark mode in react.js
How to use of Props in react.js
Class component and Functional component
How to use of Router in react.js
All React hooks explain
CSS box model
How to make portfolio nav-bar in react.js