Answer
Secure forms protect user data on both the page and the server. • Use HTTPS, server-side validation, safe output escaping, CSRF protection, and secure cookies. • Prefer native HTML elements before adding custom scripted behavior. • Test the result with a keyboard, a small screen, and browser developer tools.
💡 Simple Example
<form method="post" action="/account"><label for="display-name">Display name</label><input id="display-name" name="display_name" autocomplete="name"><button type="submit">Save</button></form>
⚡ Quick Revision
The browser can help users, but real form security must be enforced on the server.