enable_ajax_add_to_cart_single_product

function enable_ajax_add_to_cart_single_product() {
    if (is_product()) {
        ?>
        <script type="text/javascript">
           
			jQuery(function($){
				
				/* global wc_add_to_cart_params */
				if ( typeof wc_add_to_cart_params === 'undefined' ) {
					return false;
				}
				// Ajax add to cart on the product page
				var $warp_fragment_refresh = {
					url: woocommerce_params.wc_ajax_url.toString().replace( '%%endpoint%%', 'get_refreshed_fragments' ),
					type: 'POST',
					success: function( data ) {
						if ( data && data.fragments ) {

							$.each( data.fragments, function( key, value ) {
								$( key ).replaceWith( value );
							});

							$( document.body ).trigger( 'wc_fragments_refreshed' );
							$('body').addClass('is-visible');
						}
					}
				};

				$('form.cart').on('submit', function (e)
				{
					e.preventDefault();
					var form = $(this),
					button = form.find('.single_add_to_cart_button');
					button.block({ 
						message: null, 
						overlayCSS: {
							
							opacity: 0 
						}
					});

					var product_url = window.location;

					$.post(product_url, form.serialize() + '&_wp_http_referer=' + product_url, function (result)
					{
						

						// update fragments
						$.ajax($warp_fragment_refresh);

						button.unblock();

					});
				});
			});
        </script>
        <?php
   }
}
add_action('wp_footer', 'enable_ajax_add_to_cart_single_product');
function enqueue_woocommerce_ajax_add_to_cart() {
    if (is_product()) {
        wp_enqueue_script('wc-add-to-cart'); // WooCommerce Add to Cart Script
        wp_enqueue_script('woocommerce');
    }
}

add_action('wp_enqueue_scripts', 'enqueue_woocommerce_ajax_add_to_cart');