JSON Own Property Name

Question

I need some help with JavaScript. The Problem is that i have a JSON data similar as show in follow,but the problem is that i am not able to access all the objects. With my function i am able to access ["x","y","z"], but i am not able to get others "p,q,r.k,a".Can anyone help me to get this thing fixed, please dont use Object.Keys().I dont know how to iterate inside Json Data.

var Objectkeys = function(obj){
    a = []
    for(var prop in obj){
    if(obj.hasOwnProperty(prop)){
        a.push(prop)
        }
    }
    return a;
};
var obj = {
    x: 1,
    y: 2,
    z: {
        p: "Hello",
        q: "Master",
        r: {
            k: "Rotten",
            a: "apple"
        }
    }
};
window.onload = function () {
console.log(Objectkeys(obj));
//console.log(Object.keys(obj));
}

Thank you

be aware that what you present here is not JSON, it is simply a JavaScript object. JSON is not JavaScript but a serialization format (which has JavaScript compatible syntax). In JavaScript, a variable containing JSON would be of type string. After parsing/evaluating that string you would get the object. — chiccodoro, Mar 21 '14 at 08:12

Damian Krawczyk · Answer 1 · 2014-02-07T12:01:42.137

0

You need to iterate nested object also:

var Objectkeys = function(obj){
        a = []
        for(var prop in obj){
            if (obj.hasOwnProperty(prop)) {
                a.push(prop);
                if (typeof obj[prop] === 'object') {
                    a = a.concat(Objectkeys(obj[prop]));
                }
            }
        };
        return a;
    };

edited Feb 07 '14 at 12:01

answered Feb 07 '14 at 11:51

Damian Krawczyk

2,241
1
18
26

Thats what i thought of too. – SaifDeen Feb 07 '14 at 11:52
With your solution, Getting output as ["x", "y", "p", "q", "k", "a"] , but the problem is that "z" and "r" is missing.Need some help to fix that. – user3237973 Feb 07 '14 at 11:59

score 0 · Accepted Answer · answered Feb 07 '14 at 12:02

If grabbing the object keys is all you're after you can use a recursive function:

function getKeys(obj) {
  var arr = [];
  (function loop(obj) {
    for (var k in obj) {
      if (obj.hasOwnProperty(k)) {
        arr.push(k);
        if (typeof obj[k] === 'object') {
          loop(obj[k]);
        }
      }
    }
  }(obj));
  return arr;
}

console.log(getKeys(obj)); // ["x", "y", "z", "p", "q", "r", "k", "a"]

Demo.

score -1 · Answer 3 · answered Feb 07 '14 at 11:50

-1

I'm not familiar with js, but dont you have to check first if a propertys contains objects and if yes iterate trough those? So a for statement in a if statement?

answered Feb 07 '14 at 11:50

SaifDeen

862
2
16
33

JSON Own Property Name

3 Answers3