JSON/JS- Getting JSON object name

Question

I have the following object consisting of three other objects of type array :

enter image description here

I want to get the text samsung out of that object and the rest of the objects. I have tried using a for in loop but I am getting the keys 0, 1 , 2.

for(brand in brands){
 console.log(brand)  // prints out `0, 1 , 2`
}

so I added another nested for in loop, but than I get 0, 0, 0 which are the keys within samsung, and other array objects within the rest of the objects.

What am i missing ?

possible duplicate of Access / process (nested) objects, arrays or JSON — Felix Kling
– Felix Kling, Commented Apr 10, 2014 at 17:38
brands is an array of objects, each object having one property. I would suggest to convert the data to a single object with multiple properties, then your code would work. If you can't, then you are looking for Object.keys(brands[brand])[0]. — Felix Kling
– Felix Kling, Commented Apr 10, 2014 at 17:39
@FelixKling thanks for your insightful comment. would you be kind enough to share/elaborate more on how I can convert it to single object ? thanks a heaps — LogixMaster
– LogixMaster, Commented Apr 10, 2014 at 17:46
You should build your data from the beginning so that it looks like {'samsung': [...], 'otherbrand': [...], ...}. — Felix Kling
– Felix Kling, Commented Apr 10, 2014 at 17:48
You can also convert the data structure, but that only makes sense if you are going to do more things than just list the brand names. — Felix Kling
– Felix Kling, Commented Apr 10, 2014 at 18:14

Charlie G · Accepted Answer · 2014-04-10 17:42:49Z

1

You can use Object.keys(brands[brand]), and, based on your example, you would want Object.keys(brands[brand])[0]

answered Apr 10, 2014 at 17:42

Charlie G

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ncksllvn · Accepted Answer · 2014-04-10 17:47:41Z

1

Your loop is looping through the entire array, rather than the keys of an object.

var brand = brands[0];
for ( var i in brand )
  console.log( brand[i] ) // -> samsung

Or to get them all:

for ( var i = 0; i < brands.length; i++){
    var brand = brands[i];
    for ( var i in brand )
      console.log( brand[i] ) // -> samsung
}

answered Apr 10, 2014 at 17:47

ncksllvn

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1 Comment

Felix Kling Over a year ago

But this would only get the first brand name, not all brand names.

Abhishek Prakash · Accepted Answer · 2014-04-10 18:28:54Z

1

You can try

for(brand in brands[0]){
  console.log(brand);
}

assuming the name of the array to be brands

EDIT

For all the elements in the array brands

brands.forEach(function(v){
    for(brand in v){
      console.log(brand);
    }
});

edited Apr 10, 2014 at 18:28

answered Apr 10, 2014 at 17:48

Abhishek Prakash

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2 Comments

Felix Kling Over a year ago

But this would only get the first brand name, not all brand names.

Abhishek Prakash Over a year ago

If you need all brand names then loop over the brands array

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