Accessing dynamic keys from a json object of an array

Question

I need to access keys of a json object which was created dynamically . The array structure is:

self.arrayObj : Array[2]
  >0:Object
   >Display1
    ->InnerObjects
   >__proto
  >1:Object
   >Display2
    -->InnerObjects

Key is "Display1" and value is object. This key is dynamic and not fixed . How can I access the Key string from array above.

The output I am expecting as : "Display1" and "Display2"

gurvinder372 · Accepted Answer · 2016-04-28 12:05:06Z

2

try this

var keys = [];//final output of all key names

arrayObj.forEach(function(val){
  keys.concat(Object.keys(val));
});

keys now has all the dynamic property names.

answered Apr 28, 2016 at 12:05

gurvinder372

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Comments

gaetanoM · Accepted Answer · 2016-04-28 12:19:32Z

1

Using map you can do:

var arrayObj = [{'Display1': {'InnerObjects': {}}}, {'Display2': {'InnerObjects': {}}}];

var result = arrayObj.map(function(val, index) {
  return Object.keys(val)[0];
});

document.write('arrayObj keys: ' + result.toString());

answered Apr 28, 2016 at 12:19

gaetanoM

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