Test your knowledge: The <input> Element

Review

1. What state does <input> use when type is omitted or unknown?

   The default and unknown-value fallback is the Text state.
2. Which input type communicates that the value is an email address?

   type="email" selects the Email state and its associated native behavior.
3. What is the key semantic distinction of datetime-local?

   The datetime-local state represents a local date and time without a time zone.
4. What normally groups radio inputs into one mutually exclusive choice set?

   Radio buttons with the same name form the normal radio group.
5. Why is accept not a security boundary for uploaded files?

   accept provides a file-type hint; it does not replace server-side validation of uploaded content.
6. What is name primarily used for in ordinary form submission?

   name identifies the control in the form data model, while id primarily identifies the element in the document.
7. Which is the strongest basic labeling pattern for a text input?

   A label provides the normal HTML labeling mechanism; placeholder and title should not replace it as the primary label.
8. How can a listed input outside a form element be associated with that form?

   The form attribute can explicitly set the form owner using the form element id.
9. Which statement is correct?

   Disabled controls are not submitted normally, while readonly is a different concept and applies only where supported.
10. Why should you check the input state before copying attributes from another input?

    The HTML Standard defines state-specific applicability for input attributes and APIs.
11. What is the dirty value flag useful for understanding?

    The dirty value model explains important differences between markup defaults and the live value of text-entry controls.