You can try this… …rather than returning the value, send a JSON success message.
$response = new WP_REST_Response($final_price_return, 200);
wp_send_json_success( $response );
wp_die();
//you have to end the process, so if you're getting just a 0 returned in your JS success, it's because of this.
Then, in your JS/jQuery:
success: function (success, data) {
var res = success.data;
console.log(res)
$('#total_amount').html(res)
$('#totalbox').removeClass('d-none')
$('#email_form').removeClass('d-none')
},
It may even just be that your lack of wp_die()
or lack of exit()
at the end of your AJAX callback is the issue.
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