Dojo how to get JSON attribute from dojo.data.ItemFileReadStore

http://stackoverflow.com/questions/11795779/dojo-how-to-get-json-attribute-from-dojo-data-itemfilereadstore

HTML

<div id="markup"></div>

JavaScript

require(["dojo/data/ItemFileReadStore", "dojo/domReady!"
], function(Store) {
    
    dojo.declare("MyCustomStore", [Store], {
        _getItemsFromLoadedData: function(/* Object */ dataObject){
            this.serverStatus = dataObject.status;                     
            this.inherited(arguments);                            
        }
    });
    
    var typesData = {
        status: "success",
        label: "name",
        identifier: "value",
        items: [
            {value: 3, name: "Truck"},
            {value: 8, name: "Van"},
            {value: 6, name: "Car"},
            {value: 7, name: "Scooter"}
        ]
    };
    var test = new MyCustomStore({ data: typesData });
    test._forceLoad();
    
    dojo.byId("markup").innerHTML = test.serverStatus;
});