[Solved] Create a new javascript object with only selected attributes from another existing object

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JSFIDDLE DEMO

code:

var json = {
  "test": [
        {
            "a": "val_a1",
            "b": "val_b1",
            "c": "val_c1",
            "d": "val_d1"
        },
        {
            "a": "val_a2",
            "b": "val_b2",
            "c": "val_c2",
            "d": "val_d2"
        },
        {
            "a": "val_a3",
            "b": "val_b3",
            "c": "val_c3",
            "d": "val_d3"
        }
    ]
};

var new_json = {test:{}};
$(document).ready(function(){
    $.each(json.test, function(key, value){
        //console.log("key = "+key);
        //console.log("value = ");
        //console.log(value);
        var new_obj = {};
        new_obj.a = value.a;
        new_obj.c = value.c;
        new_json.test[key] = new_obj;
    });

    console.log("new_json = ");
    console.log(new_json);//here new_json will only contain attributes "a" and "c" only
});

solved Create a new javascript object with only selected attributes from another existing object