How would you get a JSONPath to all child nodes in an array of JSON object?

Question

How would you get a JSONPath to all child node of an object?

E.g.:

var data = [{
    "key1": {
        "children": [{
            "key2": "value",
            "key3": "value",
            "key4": {}
        }, {
            "key2": "value",
            "key3": "value",
            "key4": {}
        }],
        "key5": "value"
    }
}, {
    "key1": {
        "children": {
            "key2": "value",
            "key3": "value",
            "key4": {}
        },
        "key5": "value"
    }
}]

I want to get absolute path for all nodes in the data structure as an array:

[
    "data[0]['key1']['children'][0]['key2']", 
    "data[0]['key1']['children'][0]['key3']", 
    "data[0]['key1']['children'][0]['key4']", 
    ......, 
    "data[0]['key1']['children'][1]['key2']",
    ......., 
    "data[1]['key1']['children']['key2']",
    ..........
]

Is there any way to get this done in JS?

Yes, I suppose there are many ways to do it... Where did you get stuck? — elclanrs
– elclanrs, Commented Sep 5, 2013 at 6:40
Ok, I understand the term "JSONPath" (based on the tag description, it makes sense (the comparison between to XPath and XML seems appropriate)). But you are not working with JSON in your example, hence I will edit your question accordingly. — Felix Kling
– Felix Kling, Commented Sep 5, 2013 at 6:42
You might want to have a look at stackoverflow.com/questions/11922383/…. — Felix Kling
– Felix Kling, Commented Sep 5, 2013 at 6:47

Okky · Accepted Answer · 2013-09-05 08:00:17Z

5

I wrote a custom code that gives us JSON path of all nodes as array

function toArray(obj, name) {
    var result = [];
    var passName;
    var tempArray = [];
    for (var prop in obj) {
        var value = obj[prop];
        if (typeof value === 'object') {
            if ($.isNumeric(prop)) {
                passName = name + "[" + prop + "]";
            } else {
                passName = name + "['" + prop + "']";
            }
            tempArray = toArray(value, passName);
            $.each(tempArray, function (key, value) {
                result.push(value);
            });

        } else {
            result.push(name + "['" + prop + "']");
        }
    }
    return result;
}

JS Fiddle

answered Sep 5, 2013 at 8:00

Okky

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Vikash Pandey · Accepted Answer · 2013-09-05 07:20:01Z

3

well , I think you have to loop through your entire json structure..

  for(var i=0; i<data.length; i++) {
     for(var j in data[i]){
       //and so on
      }
   }

Or simply you can create aleas arrary for every key where key will be the path of that value with "_" as separator like..

 var aleasArray = []; 
 for(var i=0; i<data.length; i++) {
     for(var j in data[i]){
      aleasArray[i + '_' + j] = data[i][j];  // if you want make it more generalize aleas array..
      }
   }

hope this will help you..

edited Sep 5, 2013 at 7:20

answered Sep 5, 2013 at 7:10

Vikash Pandey

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1 Comment

Okky Over a year ago

What about the path of nested arrays

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