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<!DOCTYPE html> <html> <head> <meta charset="UTF-8" /> <script src="https://unpkg.com/react@17.0.2/umd/react.development.js"></script> <script src="https://unpkg.com/react-dom@17.0.2/umd/react-dom.development.js"></script> <script src="https://unpkg.com/@babel/standalone@7.14.7/babel.min.js"></script> </head> <body> <div id="app"></div> <script type="text/babel"> const { useState, useEffect } = React; function App() { const formatCreditCardNumber = (number) => { const cleanNumber = number.replace(/\D/g, ""); const groups = cleanNumber.match(/.{1,4}/g); const formattedNumber = groups ? groups.join("-") : cleanNumber; return formattedNumber; }; const creditCardNumber = "1234567890123456"; const formattedNumber = formatCreditCardNumber(creditCardNumber); return ( <div className="container"> <h3>React Js Formatted Credit Card Number</h3> <p>Credit Card Number : {creditCardNumber}</p> <label>Formatted Credit Card Number:</label> <span>{formattedNumber}</span> </div> ); } ReactDOM.render(<App />, document.getElementById("app")); </script> <style> .container { max-width: 500px; margin: 0 auto; padding: 20px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); } </style> </body> </html>