Navigation & Inputs · Inputs & Forms
Form Validation
also known as Input validation, Field validation
Form validation is the process of verifying that user input meets requirements, such as a valid email format or a required field being filled, and communicating problems clearly. It can happen as the user types, when a field loses focus, or on submit. Good validation prevents bad data and reduces frustration.
Don't confuse it with
Form validation is the overall concept of checking input; inline validation is the specific technique of validating each field in real time near it. Helper text is proactive guidance, not a validation result.
In the wild
A signup form flagging 'Passwords do not match' before you can submit.