i have json data from server.

```
{"brand_id" : "14", "brand_name" : "Honda"}

```

I call theme through jquery `$.getJSON`

```
$.getJSON('data.php',function(json){
   $('select').append('<option value="'+ json.brand_id +'">' + json.brand_name + '</option>'
});

```

And it works well.
The problem is i want replace **brand\_id** / **brand\_name** be numeric index
like `json.brand_id` be `json[0]` / `json.brand_name` be `json[1]` . 
This can not work well.
How can i get theme?
please help !