Accessing "name" of the subscribed variable in ko subscribe method

Question

I know i can access the newValue of the subscribed variable but how can i access to the name of it:

for ( var i = 0; i < carSelects.length; i++) {
    var carId = $(carSelects[i]).attr('carId');
    self["cars_" + carId + "_selected"] = ko.observableArray();
    self["cars_" + carId + "_selected"].subscribe(function(newValue) {
       // here i want to access the name of the subsribed variable 
       // i.e. "cars_" + carId + "_selected"
    });
}

Answer 1

Try like this:

for ( var i = 0; i < carSelects.length; i++) {
   var carId = $(carSelects[i]).attr('carId');
   (function(name){
       self[name] = ko.observableArray();
       self[name].subscribe(function(newValue) {
           alert(name);
       });
   })("cars_" + carId + "_selected");
}