Dynamic Form using React and Formik-based FieldArray with Yup validation

In this article, we will explore how to create a dynamic form using React and Formik-based FieldArray along with Yup validation for dynamic data.

Setting up the project

First, make sure you have Node.js and npm installed on your machine. Then, create a new React project using the following command:

    npx create-react-app dynamic-form
  

Next, navigate to the project directory and install Formik and Yup:

    npm install formik yup
  

Creating the dynamic form

Now, let’s create a new component for our dynamic form. Create a file called DynamicForm.js and add the following code:

    import React from 'react';
    import { Formik, Form, Field, FieldArray } from 'formik';
    import * as Yup from 'yup';

    const DynamicForm = () => {
      return (
        

          
Dynamic Form
           {
              // Handle form submission
            }}
          >
            {({ values }) => (
              

                
                  {({ push, remove }) => (
                    

                      {values.items.map((item, index) => (
                        

                          
                           remove(index)}>
                            Remove
                          
                        
                      ))}
                       push('')}>
                        Add Item
                      
                    
                  )}
                
                Submit
              
            )}
          
        
      );
    }

    export default DynamicForm;
  

Now, you can use the DynamicForm component in your app and it will render a dynamic form with the ability to add and remove input fields. The form also includes validation using Yup for ensuring that the input fields are not empty.

Conclusion

Creating a dynamic form using React and Formik-based FieldArray along with Yup validation for dynamic data is a powerful way to handle complex forms with ease. By using the FieldArray component, you can easily add and remove input fields as needed, and Yup validation ensures that the data entered by the user is accurate and meets your requirements.