<?php


    $objectManager = MagentoFrameworkAppObjectManager::getInstance();
        $_product = $objectManager->get('MagentoCatalogModelProduct')->load($productId);

        echo $_product ; die;


    foreach ($_product->getOptions() as $options) {
    $optionType = $options->getType();
    $optionTitle = implode('_', explode(" ", $options->getTitle()));
    $options->getId();


    if($optionType == MagentoCatalogModelProductOption::OPTION_TYPE_AREA):
?>
<input style="display: none"   type="text"  onchange="opConfig.reloadPrice()" id="options_<?php echo $options->getId() ?>_text" class="<?php echo $optionTitle; ?> input-text<?php echo $options->getIsRequire() ? ' required-entry' : '' ?> <?php echo $options->getMaxCharacters() ? ' validate-length maximum-length-'.$options->getMaxCharacters() : '' ?> product-custom-option" name="options[<?php echo $options->getId() ?>]" value="<?php echo $this->escapeHtml($this->getDefaultValue()) ?>" />
<?php elseif ($optionType == MagentoCatalogModelProductOption::OPTION_TYPE_AREA): ?>
<textarea style="display: none"  id="options_<?php echo $options->getId() ?>_text" onchange="opConfig.reloadPrice()" class="<?php echo $optionTitle; ?> <?php echo $options->getIsRequire() ? ' required-entry' : '' ?> <?php echo $options->getMaxCharacters() ? ' validate-length maximum-length-'.$options->getMaxCharacters() : '' ?> product-custom-option" name="options[<?php echo $options->getId() ?>]" rows="5" cols="25"><?php echo $this->escapeHtml($this->getDefaultValue()) ?></textarea>
<?php endif; ?>
<?php } ?>