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Password Validation With Yup And Formik

In the fast-paced world of software development, ensuring that user inputs are secure is crucial. One common way to enhance security is through robust password validation. Today, we'll explore how to implement password validation using Yup and Formik, two powerful JavaScript libraries.

Yup is a schema validation library that allows you to create and validate schemas for objects. It provides a simple API to define and validate the shape of your data. On the other hand, Formik is a form library for React that helps in managing form state, handling form submission, and validation.

To get started with password validation using Yup and Formik, first, make sure you have both libraries installed in your project. You can do this using npm or yarn:

Bash

npm install yup formik
# or
yarn add yup formik

Next, let's define a Yup schema for validating passwords. We can set rules such as minimum length, maximum length, and required characters. Here's an example schema for validating passwords:

Javascript

import * as Yup from 'yup';

const passwordSchema = Yup.string()
  .min(8, 'Password must be at least 8 characters')
  .max(20, 'Password must be at most 20 characters')
  .matches(
    /^(?=.*[a-z])(?=.*[A-Z])(?=.*d)(?=.*[@$!%*?&])[A-Za-zd@$!%*?&]{8,}$/,
    'Password must contain at least one uppercase letter, one lowercase letter, one number, and one special character'
  )
  .required('Password is required');

In this schema, we are specifying that the password must be at least 8 characters long and at most 20 characters long. It should contain at least one uppercase letter, one lowercase letter, one number, and one special character.

Now, let's integrate this password validation schema into a Formik form. Below is an example of a simple form component using Formik and Yup for password validation:

Javascript

import React from 'react';
import { Formik, Form, Field, ErrorMessage } from 'formik';

function PasswordForm() {
  return (
     {
        console.log('Password submitted:', values.password);
      }}
    >
      
        
        
        <button type="submit">Submit</button>
      
    
  );
}

export default PasswordForm;

In this component, we defined a form with a single password field that is validated using the `passwordSchema` we created earlier. The error message will be displayed if the password input does not meet the validation criteria.

By following these steps, you can easily implement password validation using Yup and Formik in your React applications. Remember that securing user inputs, especially sensitive data like passwords, is a critical aspect of web development. With the right tools and practices, you can enhance the security of your applications and provide a better user experience.

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