Redirect contact form 7 dropdown menu

Paste code in function.php in Child theme

add_action( 'wp_footer', 'redirect_cf7' );
 
function redirect_cf7() {
?>
<script type="text/javascript">
document.addEventListener( 'wpcf7submit', function( event ) {
   if ( '2483' == event.detail.contactFormId ) { // Sends sumissions on form 947 to the first thank you page
    location = 'https://www.example.com/thank-you-1/';
    } else if ( 'Trang 2' == event.detail.contactFormId  ) { // Sends submissions on form 1070 to the second thank you page
        location = 'https://www.example.com/thank-you-2/';
    } else { // Sends submissions on all unaccounted for forms to the third thank you page
        location = 'https://www.example.com/thank-you-3/';
    }
}, false );
</script>
<?php
}