Strange behavior of variables outside of if/else-statement

Firstly I will show you what I got:

My Json:

{"cols":[{"label":"Datum","type":"datetime"},{"label":"UsindsVorigeCall","type":"number"}],"rows":[{"c":[{"v":"Date(2010,02,20,05)"},{"v":"0.2300"}]},{"c": [{"v":"Date(2010,02,20,06)"},{"v":"0.0000"}]},{"c": [{"v":"Date(2010,02,20,07)"},{ "v":"0.0000"}]}]}

What I want to do is to change the value inside of my JSON and this is the solution I tried.
My code :

 var jsonData = $.ajax({
    url: 'output.json',
    dataType: 'json',
    data: 'UsindsVorigeCall',
    crossDomain: true,
    async: false,
    success: function(data) {
        var obj1,obj2;
        json = $.each(data, function(key,value){
            if(key==['rows']){
                $.each(value, function(x,y){
                    $.each(y,function(prop,val){
                        $.each(val,function(a,b){
                            $.each(b,function(p,v){
                                str = JSON.stringify(b);
                                if(v>0){
                                    v = 1;
                                }else if(v<=0){
                                    v = 0;
                                }else{};
                                if(typeof v === 'string' ){
                                    objs = '{"' + p + '":"' + v +'"}';
                                    obj1 = JSON.parse(objs);
                                    //console.log(obj1);
                                }else if(typeof v === 'number' ){
                                    objn = '{"' + p + '":"' + v +'"}';
                                    obj2 = JSON.parse(objn);
                                    //console.log(obj2);
                                };
                                //console.log(obj1);
                                //console.log(obj2);
                            })
                            arr1 = [obj1];
                            arr2 = [obj2];
                            arr = $.merge(arr1,arr2);
                            console.log(arr);
                        })
                    })
                })
            }
        })
    }
})

If i am using obj1 or obj 2 inside of the if/else-statement it works as i want it to work (here you can see the console.log of obj1 and obj2):

  Object {v: "Date(2010,02,20,05)"}
  Object {v: "1"}
  Object {v: "Date(2010,02,20,06)"}
  Object {v: "0"}
  Object {v: "Date(2010,02,20,07)"}
  Object {v: "0"}

But outside of the if/else-statement the variables behave not as i want them to:

  Object {v: "Date(2010,02,20,05)"}
  undefined
  Object {v: "Date(2010,02,20,05)"}
  Object {v: "1"}
  Object {v: "Date(2010,02,20,06)"}
  Object {v: "1"}
  Object {v: "Date(2010,02,20,06)"}
  Object {v: "0"}
  Object {v: "Date(2010,02,20,07)"}
  Object {v: "0"}
  Object {v: "Date(2010,02,20,07)"}
  Object {v: "0"}

My question is :
Why do the variables behave like that?
How can I fix it so that the behave like I want them to?
Or is there maybe an easier way to change the value inside of the json?