hierarchical data, how to loop all level and insert additional data into each node

Question

I have hierarchical data in Javascript looks like below and I try to find the way add jsonStringify in each comments node, how to do it?

var o = {
  "comments": {
    "count": 2,
    "data": [
      {
        "text": "..",

        "comments": {
          "count": 1,
          "data": [
            {
              "text": "..",

              "comments": {
                "count": 0,
                "data": [],
                // "jsonStringify":
              }
            },
          ],
          // "jsonStringify":
        }
      },

      {
        "text": "..",

        "comments": {
          "count": 0,
          "data": [],
          // "jsonStringify":
        }
      },     
    ],
    // "jsonStringify":
  }
};

add jsonStringfy
this only work with knowing how many level

var jsonStringify = JSON.stringify(o.comments);
o.comments.jsonStringify = jsonStringify;

for (var i = 0; i < o.comments.data.length; i++) {
  var jsonStringify = JSON.stringify(o.comments.data[i].comments);
  o.comments.data[i].comments.jsonStringify = jsonStringify;
}

for example above data have 2 branch, and the deepest level is 3 (
"comments" > "comments" > "comments",
"comments" >"comments"),
I want to find each "comments" get the value like below 1 and apply to JSON.stringify function get result then modified the same node insert the result become 2

1
"comments": {
  "count": 0,
  "data": []
}
2
"comments": {
  "count": 0,
  "data": [],
  "jsonStringify": "{\"count\":0,\"data\":[]}"
}

I try to find the way if the data unknown how many level

Do you want to find each node named 'comments' and then apply the jsonStringify() function to its value? And if so, what do you want to the result of the stringifying? — John Hascall
– John Hascall, Commented Feb 3, 2016 at 23:08
@JohnHascall Thanks for reply, yes I want to find each node "comments" and apply JSON.stringify() to its value, then append the result to the same "comments" node — user1575921
– user1575921, Commented Feb 3, 2016 at 23:10
still don't get it, maybe it's the wording you use. can you give an example of input and output? Do you want to serialize sth. or is this your approach to achieve the goal? What do you want to end with? an Object or a String? — Thomas
– Thomas, Commented Feb 3, 2016 at 23:23

Eugene Hauptmann · Accepted Answer · 2016-02-04 00:09:49Z

4

It was answered before original question were modified with the remark to the different count numbers. Still waiting for author to elaborate about it.

Source code:

var o = {
  "comments": {
    "count": 2,
    "data": [
      {
        "text": "..",
        "comments": {
          "count": 1,
          "data": [
            {
              "text": "..",

              "comments": {
                "count": 0,
                "data": [],
              }
            },
          ]
        }
      },
      {
        "text": "..",
        "comments": {
          "count": 0,
          "data": []
        }
      }
    ]
  }
};

function jsonStringify(array){
  for(var i=0;i<array.length;i++){
    var ar = array[i];
    ar.comments.jsonStringify = JSON.stringify(ar.comments);
    ar.comments.data = jsonStringify(ar.comments.data);
    array[i] = ar;
  }
  return array;
}

var result = jsonStringify([o]);

console.log( JSON.stringify(result,null,'\t') );

result:

[
    {
        "comments": {
            "count": 2,
            "data": [
                {
                    "text": "..",
                    "comments": {
                        "count": 1,
                        "data": [
                            {
                                "text": "..",
                                "comments": {
                                    "count": 0,
                                    "data": [],
                                    "jsonStringify": "{\"count\":0,\"data\":[]}"
                                }
                            }
                        ],
                        "jsonStringify": "{\"count\":1,\"data\":[{\"text\":\"..\",\"comments\":{\"count\":0,\"data\":[]}}]}"
                    }
                },
                {
                    "text": "..",
                    "comments": {
                        "count": 0,
                        "data": [],
                        "jsonStringify": "{\"count\":0,\"data\":[]}"
                    }
                }
            ],
            "jsonStringify": "{\"count\":2,\"data\":[{\"text\":\"..\",\"comments\":{\"count\":1,\"data\":[{\"text\":\"..\",\"comments\":{\"count\":0,\"data\":[]}}]}},{\"text\":\"..\",\"comments\":{\"count\":0,\"data\":[]}}]}"
        }
    }
]

edited Feb 4, 2016 at 0:09

answered Feb 3, 2016 at 23:28

Eugene Hauptmann

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5 Comments

user1575921 Over a year ago

Thanks for reply, but this seems only work with knowing how many level comments

Eugene Hauptmann Over a year ago

sorry, I didn't quite get it then. How do you need to have the mechanics working then?

Eugene Hauptmann Over a year ago

can you show the final JSON that you want to have with already calculated jsonStringify fields please?

user1575921 Over a year ago

the result in your answer is the data format what I I want , but my question is make a function work with don't have to know how many level within the hierarchical data.

user1575921 Over a year ago

oh my god so sorry waste ur time I only read you code but not test, and miss the function calling inside

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