Forms

Summary

The `<form>` element and its children collect user input and submit it to a server — the backbone of logins, search bars and checkouts. A well-designed form also needs labels, sensible field names, validation, keyboard accessibility, error messaging, and a clear submission lifecycle.

• 1Build a signup form using labels, fieldsets and proper form structure. Keep the first version small, then add one improvement after the core behavior works.
• 2Learn the difference between GET and POST form submission. Focus on understanding the underlying reason it works, not only memorizing the definition.
• 3Practice handling form submission with JavaScript's `preventDefault()`.