<div class="header-cart-count"><?php echo WC()->cart->get_cart_contents_count(); ?></div>
add_filter( 'woocommerce_add_to_cart_fragments', 'iconic_cart_count_fragments', 10, 1 ); function iconic_cart_count_fragments( $fragments ) { $fragments['div.header-cart-count'] = '<div class="header-cart-count">' . WC()->cart->get_cart_contents_count() . '</div>'; return $fragments; }
Reference : Update Custom Cart Count (or any HTML) after AJAX Add to Cart in WooCommerce