How to pass a variable to $_POST?

Question

JavaScript

$custom_checkout_fields = [
  'order_comment',
  'delivery_method' 
];

foreach ($custom_checkout_fields as $field) {
    if ( ! empty( $_POST[$field] ) ) {
                 echo "wow";
    }
  }

echo does not work, although I fill out 'order_comment' and 'delivery_method' through the form, maybe it's impossible to pass a variable to $_post ??

Answer 1

How to implement a slider?

Answer 2

$_POST contains what is passed in the parameters of the POST request. To do this, the form must have a POST submission type.
And if you manually write parameters in the url as in a GET request, then this is GG.