No-JS Support for Gravity Forms AJAX

gform_ajax_nojs.js

jQuery(document).ready(function($) {

	// Gravity Forms no-js support on Ajax
	if ( $('.gform_wrapper form[data-target]').length ) {
		$('.gform_wrapper form[data-target]').attr('target', $('.gform_wrapper form[data-target]').data('target'));
	}
	if ( $(".gform_wrapper input[name='nojs_gform_ajax']").length ) {
		$(".gform_wrapper input[name='nojs_gform_ajax']").attr('name', 'gform_ajax');
	}

});

gform_ajax_nojs.php

// Replace Gravity Forms form target attribute as data-target for no-js support
function update_gform_target_nojs( $form_tag, $form ) {
	if ( strpos( $form_tag, 'target=' ) !== false ) {
		$form_tag = str_replace('target=', 'data-target=', $form_tag);
	}
	return $form_tag;
}
add_filter( 'gform_form_tag', 'update_gform_target_nojs', 10, 2 );

// Replace Gravity Forms gform_ajax hidden input with nojs_gform_ajax for no-js support
function update_gform_ajaxinput_nojs( $form_string, $form ) {
	if ( strpos( $form_string, "name='gform_ajax'" ) !== false ) {
		$form_string = str_replace("name='gform_ajax'", "name='nojs_gform_ajax'", $form_string);
	}
	return $form_string;
}
add_filter( 'gform_get_form_filter', 'update_gform_ajaxinput_nojs', 10, 2 );