Access first array in javascript object

Question

I'm trying to access the first array of javascript object

Date:

      var data = {};
      data['bmw'] = {
        'google':[
          'seller1',
          'seller2',
          'seller3',
        ],
        'microsoft':[
          'seller3',
          'seller4',
          'seller5',
        ],
      };

Output should be:

array(
              'seller1',
              'seller2',
              'seller3',
)

my code (not working)

<script>
    data[Object.keys(data)[0]]; // return Object {item_type1: Array[3], item_type2: Array[3]}

    data[Object.keys(data)[0]][0]; // return undefined
</script>

You can't have two objects under the same key. You'll only have one 'dynamic_name' array in data object and it will be the second one. — Maggie
– Maggie, Commented Aug 17, 2016 at 9:31
@jcubic – Can object have multiple key having identical name ? — Rayon
– Rayon, Commented Aug 17, 2016 at 9:32
If you preparing this response from SERVER then add it to one single key with values as array of array or array like object. your property will overwritten with last element.So u will not get array — RIYAJ KHAN
– RIYAJ KHAN, Commented Aug 17, 2016 at 9:34

Kinshuk Lahiri · Accepted Answer · 2016-08-17 10:00:26Z

2

How can you have two keys with the same name. Its obvious that that the last one will override the first key and you will be able to access the data of the last key. In order to get the data from the first key change the name and then run data[Object.keys(data)[0]] and pass key and value to it. For key 0 you will get the first object and then you can loop inside it to get the values. Updated the answer. Check this.

 var data = {};
  data['bmw'] = {
    'google':[
      'seller1',
      'seller2',
      'seller3',
    ],
    'microsoft':[
      'seller3',
      'seller4',
      'seller5',
    ],
  };

 var first = data[Object.keys(data)[0]]; 

 console.log(first[Object.keys(first)[0]]);

edited Aug 17, 2016 at 10:00

answered Aug 17, 2016 at 9:33

Kinshuk Lahiri

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1 Comment

Abudayah Over a year ago

awesome awesome :)

Phil Cooper · Accepted Answer · 2016-08-17 09:30:37Z

-1

Try:

data['dynamic_name']

You'll need to access the properties by name.

answered Aug 17, 2016 at 9:30

Phil Cooper

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2 Comments

RIYAJ KHAN Over a year ago

data is concated with second array element

Abudayah Over a year ago

the name is dynamic

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