Here's an example of how you can convert the given PHP app to a Next.js app:
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`import { useState } from 'react' function LoginForm() { const [username, setUsername] = useState('') const [password, setPassword] = useState('') const [error, setError] = useState('') async function handleSubmit(e) { e.preventDefault() try { const response = await fetch('/api/login', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ username, password }), }) const data = await response.json() if (data.success) { // user is logged in successfully in the back-end // let's redirect window.location.href = '/my_profile' } else { setError('Invalid Credentials!') } } catch (err) { setError(err.message) } } return (
{error &&
{error}
} Username:
{username}
setUsername(e.target.value)} /> Password:
••••••••••
setPassword(e.target.value)} />
) } export default LoginForm`
Then, you can create an `api` route in your Next.js app to handle the login request:
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`import { NextApiRequest, NextApiResponse } from 'next' export default function login(req: NextApiRequest, res: NextApiResponse) { if (req.method === 'POST') { // do user authentication as per your requirements // ... // ... // based on successful authentication res.json({ success: 1 }) } else { res.json({ success: 0 }) } }`
You'll also need to remove the jQuery script and the script that handles the form submission, as that functionality is now being handled in the `LoginForm` component using React hooks.
I hope this helps! Let me know if you have any questions.
