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

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"
);