Find value of key from javascript JSON Object

Question

I have this object value

var data = {
    "questions": {
        "0": {
            "0": "17",
            "1": "12"
        },
        "1": {
            "0": "22",
            "1": "34"
        },
        "2": {
            "0": "52",
            "1": "61"
        }
    }
}

I am trying to get value from these objects as I have tried below things which return me other than what I actually want.

alert(Object.keys(data.questions[0])); // Output : 0,1
alert(Object.keys(data.questions[0][0])); // Output : 0
alert(Object.keys(data.questions[0][1])); // Output : 0

Anyone can help me find the value of above keys like:

questions[0][0] = 17 
questions[0][1] = 12

what you are trying with Object.keys(data.questions[0][0])? where data.questions[0][0] is 17 so what you meant with Object.keys(17)? — Koushik Chatterjee
– Koushik Chatterjee, Commented Aug 23, 2017 at 9:48
@KoushikChatterjee Object.keys(...) is working for me for count total question and also total parameter in one question now I want to get the value of parameter 0 and parameter 1. Where I am stuck right now. — Kirankumar Dafda
– Kirankumar Dafda, Commented Aug 23, 2017 at 9:52
console.log(data.questions["0"]["1"]); this should give the results. — Dinesh undefined
– Dinesh undefined, Commented Aug 23, 2017 at 9:52

Dinesh undefined · Accepted Answer · 2017-08-23 09:54:23Z

1

Try like this.

var data = {
    "questions": {
        "0": {
            "0": "17",
            "1": "12"
        },
        "1": {
            "0": "22",
            "1": "34"
        },
        "2": {
            "0": "52",
            "1": "61"
        }
    }
}

console.log(data.questions["0"]);
console.log(data.questions["0"]["0"]);
console.log(data.questions["0"]["1"]);

answered Aug 23, 2017 at 9:54

Dinesh undefined

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3 Comments

Dinesh undefined Over a year ago

@KirankumarDafda did you compare his answer and my answer properly? He actually modified your data and wrote answer.

Kirankumar Dafda Over a year ago

Yes, she edited her answer. But both of your answer giving me same response which is [object,object] and 0 and 1

Dinesh undefined Over a year ago

Then there might be a other problem. Please debug your code.

Koushik Chatterjee · Accepted Answer · 2017-08-23 09:53:30Z

1

To get length of any particular question (in your data structure) use

Object.keys(data.questions["0"]) or Object.keys(data.questions["1"])

to get value of any questions use

data.questions["0"]["0"] or data.questions["0"]["1"] or data.questions["1"]["0"] and so on..

answered Aug 23, 2017 at 9:53

Koushik Chatterjee

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2 Comments

Kirankumar Dafda Over a year ago

Not working for me data.questions[0][0] returns 0 and data.questions[0][1] returns 0. while I need 17 and 12

Koushik Chatterjee Over a year ago

It should work, try pressing Run code snippet button on Nina's answer

Nina Scholz · Accepted Answer · 2017-08-23 10:09:19Z

1

You get the result without Object.keys.

var data = { questions: { 0: { 0: "17", 1: "12" }, 1: { 0: "22", 1: "34" }, 2: { 0: "52", 1: "61" } } };

console.log(data.questions[0]);    // { 0: "17", 1: "12" }
console.log(data.questions[0][0]); // 17
console.log(data.questions[0][1]); // 12

For searching a value's path of keys, you could use an iterative and recursive approach by checking all keys and objects.

function findValue(object, value) {
    var p;
    Object.keys(object).some(function (k) {
        var t;
        if (object[k] === value) {
            p = [k];
            return true;
        }
        if (object[k] && typeof object[k] === 'object' && (t = findValue(object[k], value))) {
            p = [k].concat(t);
            return true;
        }
    });
    return p;
}

var data = { questions: { 0: { 0: "17", 1: "12" }, 1: { 0: "22", 1: "34" }, 2: { 0: "52", 1: "61" } } };

console.log(findValue(data, '17'));
console.log(findValue(data, '34'));

.as-console-wrapper { max-height: 100% !important; top: 0; }

edited Aug 23, 2017 at 10:09

answered Aug 23, 2017 at 9:41

Nina Scholz

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2 Comments

Kirankumar Dafda Over a year ago

I need Object.key to get length of questions. Also data.questions[0] returns [object,object] and another two 0 and 1 value only

Kirankumar Dafda Over a year ago

How to get the value of keys which is 17 and 12 for first question.

Thijs · Accepted Answer · 2017-08-23 09:47:45Z

0

Can you change the data structure? If I were you I would change it to the following:

var data = {
  "questions": [
      [17, 22],
      [22, 34],
      [52, 61]
  ]
};

console.log(data.questions[0]); // Output : 17,22
console.log(data.questions[0][0]); // Output : 17
console.log(data.questions[1][1]); // Output : 34

answered Aug 23, 2017 at 9:47

Thijs

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1 Comment

Kirankumar Dafda Over a year ago

No, I am not able to change response of API so I need to adjust data from this detail only.

Moh K · Accepted Answer · 2017-08-23 10:18:52Z

0

To access the first object ["0"] To access the first two object : ["0"]["0"] and so on based on the above expression we can access the objects like this

var data = {
    "questions": {
        "0": {
            "0": "17",
            "1": "12"
        },
        "1": {
            "0": "22",
            "1": "34"
        },
        "2": {
            "0": "52",
            "1": "61"
        }
    }
}

console.log(data.questions["0"]);
console.log(data.questions["0"]["0"]);
console.log(data.questions["0"]["1"]);
console.log(data.questions["1"]["1"]);

edited Aug 23, 2017 at 10:18

answered Aug 23, 2017 at 10:06

Moh K

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