React react-password-checklist: Strong password UI feedback | ShillehTek

Video Tutorial (Optional)

Watch first if you want to follow along with the full React password validation UI build in real time.

Project Overview

React Frontend Password Validation (Strong Password): In this project, you add strong password validation to a React signup form using the react-password-checklist component so users can see password rules and match status directly in the UI.

This approach helps users understand your requirements (length, special characters, number, uppercase, lowercase, and matching confirmation) while they type.

• Time: 10 to 20 minutes
• Skill level: Beginner
• What you will build: A React password + confirm-password UI with real-time checklist validation

Parts List

From ShillehTek

• None for this software-only tutorial.

External

• react-password-checklist (npm package) - provides the UI checklist and validation rules

Note: This tutorial assumes you already have a React project with password and confirm-password state values available in your component.

Step-by-Step Guide

Step 1 - Install react-password-checklist

Goal: Add the react-password-checklist dependency to your React project.

What to do: Install the package using npm or yarn.

Code:

npm install --save react-password-checklist
# or
yarn add react-password-checklist

Expected result: The dependency is added to your project and available to import in your component.

Step 2 - Import the component

Goal: Make the PasswordChecklist component available in the React component where your signup form lives.

What to do: Add the import statement.

Code:

import PasswordChecklist from "react-password-checklist";

Expected result: Your component can render <PasswordChecklist /> without an import error.

Step 3 - Render PasswordChecklist and wire it to your form values

Goal: Show a live checklist that validates the user password against your rules and confirms it matches the confirm-password field.

What to do: Paste the PasswordChecklist component into the return section of your component. Ensure value maps to your password state (for example {password}) and valueAgain maps to your confirm password state (for example {confirmPassword}).

Code:

<PasswordChecklist
  rules={["minLength", "specialChar", "number", "capital", "match", "lowercase"]}
  minLength={8}
  value={password}
  valueAgain={confirmPassword}
/>

The password fields used in the form can look like this (the key part is that the value props match what you pass to PasswordChecklist):

<TextField
  label='Password'
  placeholder='Enter password'
  onChange={handlePassword}
  value={password}
  variant="standard"
  type={passwordShown ? "text" : "password"}
  fullWidth
  required
/>

<TextField
  label='Confirm Password'
  placeholder='Enter password'
  onChange={handleConfirmPassword}
  value={confirmPassword}
  variant="standard"
  type={passwordShown ? "text" : "password"}
  fullWidth
  required
/>

Expected result: The checklist updates dynamically as the user types, showing which rules pass or fail, including whether the passwords match.

Conclusion

You added strong password validation to a React frontend using the react-password-checklist component, including rules like minimum length, special character, number, uppercase, lowercase, and matching confirm password. The library handles the real-time checking and display so you only need to wire it to your form values and choose your rules.

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