[jQuery] Re: Problem with chronological order : jQuery code runs too late

[Julien]

Thanks, Leonardo.

This seems being the right answer. However, I fail at replacing the
$.post() request by the more general $.ajax().

Can you see any error in the manner I'm doing the ajax request ?
(The corresponding  $.post() code in my first message works fine.)

$.ajax( async: false,
        type: "POST",
        url: cart_doc,
        data: {action: 'retrieve_opt', name: fieldName},
        success:
          function (chosenOption) {

            // Some feedback about what happens.
            alert('Field');
            alert(field.name);
            alert('Chosen option:');
            alert(chosenOption);

            field.value=chosenOption; // Setting chosen option !
          },
         dataType: "text"
      );