Method getLayoutData

/**
 * Method to get the data to be passed to the layout for rendering.
 *
 * @return  array
 *
 * @since 3.7
 */
protected function getLayoutData()
{
    $data = parent::getLayoutData();
    // Initialize some field attributes.
    $extraData = array('max' => $this->max, 'min' => $this->min, 'step' => $this->step, 'value' => $this->value);
    return array_merge($data, $extraData);
}