Filter json object based on key

Question

My json object looks like this

Object
  A:Object
  B:Object
  C:Object
  D Object
  E:Object
  F:Object
  __proto__:Object

I want to get only D and E from this json object based on key. New json object should only include D and E. how to acheive this?

This question about filtering a single JSON abject however in duplicate tag question is about JSON array. Need to remove duplicate — Prasad Parab, Apr 10 '21 at 16:22

score 2 · Answer 1 · edited Feb 27 '17 at 05:58

2

Try this:

function copyObjectProps(source, keys) {
   let newObject = {}
   keys.forEach(function(key) {
     newObject[key] = source[key]
   })
   return newObject
}

And use it like:

let filteredObject = copyObjectProps(yourObject, ['D', 'E'])

edited Feb 27 '17 at 05:58

Maher Fattouh

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answered Feb 27 '17 at 05:52

Amresh Venugopal

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this is the best way to do it, but I wouldn't use arrow function because it's not widely supported yet. – Maher Fattouh Feb 27 '17 at 05:56
Where I work, we use babel that's why I end up using ES6 everywhere. Thanks for pointing it out. – Amresh Venugopal Feb 27 '17 at 05:58

Atul Sharma · Answer 2 · 2017-02-27T05:57:05.197

0

Object['D'] and Object['E'] will give you direct access to corresponding objects.

You can create new object using..

var newObj = { D : Object['D'], E : Object['E']}

Use original object name instead of Object for accessing.

Using JSON.stringify(newObj); to can get the new JSON.

edited Feb 27 '17 at 05:57

answered Feb 27 '17 at 05:48

Atul Sharma

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D Earthing is a typo. i have changed now. – Loura Feb 27 '17 at 05:50

score 0 · Answer 3 · answered Feb 27 '17 at 05:52

0

Filter only applies to arrays. Therefore, you need to define a new variable and run a for loop.

var mynewobject ={};
for (var key in myobject)
{
   if (...) // apply your condition here
      mynewobject[key] = myobject[key]
}

answered Feb 27 '17 at 05:52

Amir H. Bagheri

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score 0 · Answer 4 · answered Feb 27 '17 at 06:06

0

Use underscrore(http://underscorejs.org/) or loadash(https://lodash.com/).

The have methods like _.pick to pick specific nodes.

many more options are also available.

answered Feb 27 '17 at 06:06

Srisudhir T

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Filter json object based on key

4 Answers4