<!DOCTYPE html> <html> <head> <title>Error 404</title> </head> <body>
function findPage(url) { if (url === null) { return null; } if (url.exists) { return url; } else { return null; } }
const error = new Error('Page not found'); error.code = 404; throw error;
<div class="error">404 Error</div>
@media (max-width: 768px) { .container { padding: 20px; } }
SELECT * FROM pages WHERE id = 404;
HTTP/1.1 404 Not Found Content-Type: text/html
async function loadPage() { const response = await fetch('/api/page'); if (!response.ok) { throw new Error('404'); } }
<script> console.log('Page not found'); </script>
const routes = { '/home': Home, '/about': About, '/404': NotFound };
export default function ErrorPage() { return <h1>404</h1>; }
<?php header("HTTP/1.0 404 Not Found"); ?>
.error-container { display: flex; justify-content: center; }
app.get('*', (req, res) => { res.status(404).render('404'); });
<!DOCTYPE html> <html> <head> <title>Error 404</title> </head> <body>
