Actions & Behaviors

Validation

Validation checks whether entered information is acceptable before or during submission.

Also called Field validationInput validationCheck the formMake sure it is valid

Visual Example

name@example.com

Looks valid

Plain Definition

Validation is the checking behavior; a validation error is the feedback when the check fails.

You Might Describe This As...

  • "Check the form"
  • "Make sure it is valid"

Fast lookup

You May Also Mean

Validation is the checking process; a validation error is the feedback shown when a check fails.

Validation Error

Check the name, visual cue, and typical use.

Validation vs Validation Error

See the practical difference side by side.

What It Is Used For

  • Checking required fields
  • Confirming email format
  • Preventing invalid submissions

Example User Phrasing

  • "Validate the email before submitting."
  • "Show users which fields need fixing."