Get json object array names (metadata) using loadsh

Question

I have a json array of objects and want to find a way to get the property names into another array.

[
 {
    "ID": 12345,
    "SID": 1111,
    "DataPoint1": [
                    {
                      "Name": "SD",
                      "Activity": "KT",
                      "Group":"Test"
                    }
  }
]

I want to be able to extract all the property names of DataPoint1 into its own array:

New-->

[Name, Activity, Group]

I was looking into loadash but couldn't find anything. Any ideas? Thanks.

Jonathan Portorreal · Accepted Answer · 2017-03-07 01:31:58Z

1

You could use _.keys(data[0].DataPoint1[0]) to get the keys as an array.

const data = [{
  "ID": 12345,
  "SID": 1111,
  "DataPoint1": [{
    "Name": "SD",
    "Activity": "KT",
    "Group": "Test"
  }]
}]

console.log(_.keys(data[0].DataPoint1[0]))

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.js"></script>

answered Mar 7, 2017 at 1:31

Jonathan Portorreal

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1 Comment

joeCarpenter Over a year ago

Thanks Jonathan! Marked as answered :)

joeCarpenter · Accepted Answer · 2017-03-06 22:37:43Z

0

Answered my own question :) This did the trick:

Object.getOwnPropertyNames(array[0].DataPoint1[0])

answered Mar 6, 2017 at 22:37

joeCarpenter

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