onFirstChange

Specification

A callback function dispatched once when the first value change of a field happens.

Parameters

Param	Type	Description
event	Event	Change event reference.
prevValue	any	Previous value of the changed field.
nextValue	any	Next value of the changed field.
fieldProps	Object	Props of the field that triggered the change.
fields	Object	Reference to all fields in the form.
form	Object	Form component reference.

Example

import React from 'react'
import { Form } from 'react-advanced-form'

export default class Example extends React.Component {
  handleFirstChange = ({ event, prevValue, nextValue, fieldProps, fields, form }) => {
    console.log('Field `%s` made the form dirty.', fieldProps.name)
  }

  render() {
    return (
      <Form onFirstChange={this.handleFirstChange}>
        {/* Fields here */}
      </Form>
    )
  }
}