Using variable as attribute name when making $.post

Question

How do jQuery consider the NomeCampo as variable and not field?

var NomeCampo = $(this).attr('name');
var ValorCampo = $(this).val();

$.post(FormAction, {"NomeCampo":ValorCampo},
    function(data){
        alert(data);
    }
);

Answer 1

You are creating the object in the format JSON, that does not support variables as attribute name.

I suggest creating the object and setting the field using the variable, thus:

var NomeCampo = $(this).attr('name');
var ValorCampo = $(this).val();
var payload = {};

payload[NomeCampo] = ValorCampo;

$.post(FormAction, payload,
    function(data){
        alert(data);
    }
);