Trigger ajax cart

I’m trying to trigger the cart on click of custom “buy now” button I have created.

Right now I’m using woocommerce default $_POST, but I wonder how can I trigger your ajax to update the current product.

/* Create Buy Now Button dynamically after Add To Cart button */
    function add_content_after_addtocart() {
    global $wp;
        // get the current post/product ID
        $current_product_id = get_the_ID();
    
        // get the product based on the ID
        $product = wc_get_product( $current_product_id );
    
        // get the "Checkout Page" URL
        $url = home_url( $wp->request );
    
        // run only on simple products
        if( $product->is_type( 'simple' ) ){
            echo '<a style="display: block; text-align: center;" href="'. $url .'/?add-to-cart='.$current_product_id.'" class="buy-now button">??? ?????</a>';
        }
    }
    add_action( 'woocommerce_after_shop_loop_item', 'add_content_after_addtocart', 40 );

How can I update cart using your plugin ajax on click of “buy now” button?

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