Registration

registerElement(field, el)

Store a DOM element reference for a field. Called automatically by the x-register directive. Used by focusFirstError().

unregister(field)

Remove a field entirely — clears its data, state, schema entry, default value, and DOM reference.

form.unregister('conditionalField');

focusFirstError()

Focus the first invalid field's DOM element (in DOM registration order).

form.focusFirstError();

updateSchema(addition?, removal?)

Dynamically modify the validation schema.

// Add fields to schema
form.updateSchema({ phone: joi.string().required() });

// Remove fields from schema (also removes data and state)
form.updateSchema({}, ['phone']);

// Both at once
form.updateSchema({ newField: joi.string() }, ['oldField']);