class FormStatemethod

validateField()

Validates a single form field.

validateField(name: string & keyof TSchema): unknown;

Notes

• This method updates the errors property for the specified field, and also updates the valid property based on all (remaining) validation errors.
• If the field has no validation schema, the method returns the field value unchanged.
• This method does not emit a change event on the form state object. To update bindings for errors after calling this method on its own, call emitChange() yourself afterwards.

Parameters

• name — The name of the field to validate

Return value

The validated field value, or undefined if the field is not valid

Related

• class FormState
  An object that contains form field data, with validation rules.