App.js

import React, {useState} from 'react';

function App() {
  const [password, setPassword] = useState('');
  
  return (
    <>
      <input 
        placeholder='Enter the password' 
        value={password} 
        onChange={e => setPassword(e.target.value)} 
      />
      {password === 'abacaba' ? <p>Access granted</p> : <p>Access denied</p>}
    </>