Add JS code in header for specific sales page

Add_JS_code_in_header_for_specific_sales_page

add_action( 'wp_head', 'wffn_custom_script_on_landing_option_page' );
function wffn_custom_script_on_landing_option_page() {
    global $post;
    if ( is_null( $post ) ) {
        return;
    }

    // Check if the post ID matches the specific sales page ID (replace 123 with your desired page ID)
    $target_page_id = 104; // Replace with the sales page ID where you want the script to run
    if ( $post->ID != $target_page_id ) {
        return;
    }

    // Check if the post type matches the desired types
    if ( ! in_array( $post->post_type, array(
        //'wfacp_checkout',
        //'wfocu_offer',
        'wffn_landing',
        //'wffn_ty',
        //'wffn_optin',
        //'wffn_oty',
    ), true ) ) {
        return;
    }
    ?>
    <script type="text/javascript">
      jQuery(document).ready(function () {
    alert("Page loaded successfully!");
});
    </script>
    <?php
}