how to get specific key value from object in javascript?

I have an object and I would like to create a new object with a specific key value for example,

I have a code as follows:

var objArray = [{
    "firstname": "bbb",
    "userName": "bbb1",
    "title": "",
    "created_by_user_id": "-1",
    "enabled": "true",
    "lastname": "AC",
    "last_connection": "",
    "password": "",
    "manager_id": "0",
    "id": "14",
    "job_title": "job1",
    "last_update_date": "2018-08-08 13:35:56.996"
  },
  {
    "firstname": "aaa",
    "icon": "icons/default/icon_user.png",
    "creation_date": "2018-08-08 13:35:56.876",
    "userName": "aaa1",
    "title": "",
    "created_by_user_id": "-1",
    "enabled": "true",
    "lastname": "AH",
    "last_connection": "",
    "password": "",
    "manager_id": "0",
    "id": "9",
    "job_title": "job2",
    "last_update_date": "2018-08-08 13:35:56.876"
  }
]
for (var i = 0; i < obj.length; i++) {
  objArray.push(obj[i]["id"]);
}
return objArray

I would like to create a new object like

[{
  "id": "14"
}, {

  "id": "9",
}]

But, my result is

[
  "9",
  "3"
]

I would like to get the result as an object. I appreciate any help.

Thanks in advance

Solution

Just add an object literal by pushing:

objArray.push({ id: obj[i]["id"] });

not sure why that would be useful though...