Form Attributes in HTML
From the HTML cheat sheet · Forms & Input Elements · verified Jul 2026
Form Attributes
Important attributes for form controls
html
<!-- Input attributes: required (must fill), disabled (cannot edit), readonly (select not edit), autofocus (focus on load), autocomplete, pattern (regex validation) -->
<input type="text"
required
disabled
readonly
autofocus
autocomplete="on"
placeholder="Hint text"
pattern="[A-Z]{3}"
title="Three uppercase letters">
<!-- Form attributes: action (where to send), method (GET/POST), enctype (multipart for file uploads), autocomplete, novalidate (skip HTML5 validation) -->
<form
action="/submit"
method="POST"
enctype="multipart/form-data"
autocomplete="off"
novalidate>
<!-- Button types -->
<button type="submit">Submit Form</button>
<button type="reset">Clear Form</button>
<button type="button">Just a Button</button>💡 required, pattern, min/max for validation
📌 autocomplete helps users fill forms faster
⚠️ disabled fields don't submit with form
⚡ form attribute links inputs outside <form>
🟢 Essential for user experience and validation
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