How to convert an array of objects to array?

Question

Hi I am having an array of objects like this

  [{"$value":"Cardiology","$id":"0","$priority":null},                                                 
  {"$value":"Dermatology","$id":"1","$priority":null},
  {"$value":"Physiology","$id":"2","$priority":null},{"$value":"Child   
  Physiology","$id":"3","$priority":null}]

I would like to convert this into

   ['Cardiology','Dermatology','Physiology','Child Physiology']

any help will be appreciated.

score 1 · Answer 1 · answered Jul 13 '15 at 11:20

1

You need to iterate over the array and create another array.

var arr = [{"$value":"Cardiology","$id":"0","$priority":null},                                                 
  {"$value":"Dermatology","$id":"1","$priority":null},
  {"$value":"Physiology","$id":"2","$priority":null},{"$value":"Child Physiology","$id":"3","$priority":null}];
var arr1 = [];

for (var i = 0 ; i < arr.length; i++) {
   arr1.push(arr[i].$value);
}
console.log(arr1);

answered Jul 13 '15 at 11:20

Nikhil Aggarwal

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1

Thanks Nikhil this worked ! – Karthik VK Jul 13 '15 at 17:38
@KarthikVK - Good to know that. You can always mark the answer as accepted for future reference. – Nikhil Aggarwal Jul 13 '15 at 17:41

score 1 · Answer 2 · answered Jul 13 '15 at 11:21

You can use Array.map()

var array = [{
  "$value": "Cardiology",
  "$id": "0",
  "$priority": null
}, {
  "$value": "Dermatology",
  "$id": "1",
  "$priority": null
}, {
  "$value": "Physiology",
  "$id": "2",
  "$priority": null
}, {
  "$value": "Child Physiology",
  "$id": "3",
  "$priority": null
}]

var newarray = array.map(function(obj) {
  return obj.$value
});

snippet.log(JSON.stringify(newarray))

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<!-- To show result in the dom instead of console, only to be used in the snippet not in production -->
<script src="http://tjcrowder.github.io/simple-snippets-console/snippet.js"></script>

How to convert an array of objects to array?

2 Answers2