how to parse json recursively ?

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Javascript

jQuery

Hi I am parsing the json file .I need all value of label property of commandList in an array .I am able to get all values of label .But I need only commandList label value can we get this ?

http://jsfiddle.net/62ryk/1/

function recursiveIteration(object, callback) {
    for (var property in object) {
        if (object.hasOwnProperty(property)) {
            if (typeof object[property] == "object"){
                recursiveIteration(object[property], callback);
            }else{
                //found a property which is not an object, check for your conditions here
                callback(object, property);

            }
        }
    }
}
var labels=new Array();
function test_cb(object, property){
    if(property == "label" && object[property])
    {

        labels.push(object[property])

    }
}

 recursiveIteration(json, test_cb);

alert(labels)