CODEWITHSUNDEEP
javascriptecmascript-6
R9102
R9102

Reputation: 727

How to iterate through array of objects in ES6

Trying to iterate array of objects using es6 as it is very new for me

here is my array of objects

[j]
0: j
$extCollectionIndex: 0
data: {ID: "b7f7ce8b-1455-41b3-ac26-b54916f6718f", userId: "444441", userName: "cjtest.1", email: "[email protected]",  …}

need to return or console username

I just tried(map and find )

let obj = records.map(obj => {return obj.data});

console.log(obj)//[object,object]

can any one help me on this

Upvotes: 1

Views: 8676

Answers (3)

Martial
Martial

Reputation: 1562

Array.prototype.map will return a new array. If you return obj.data you will have an array of objects. You need to be more specific about the data you need.

let obj = records.map(obj => obj.data.userName );

Upvotes: 3

Treycos
Treycos

Reputation: 7492

Just use your map function over record.data.userName and not just record.data, you can then print it out using join. Or use a forEach loop with a console.log inside.

Working example :

function foo(){
  const records = [
      {
          "data": {
              "ID": "b7f7ce8b-1455-41b3-ac26-b54916f6718f",
              "userId": "444441",
              "userName": "cjtest.1",
              "email": "[email protected]"
          }
      },
      {
          "data": {
              "ID": "b7f7ce8b-1455-41b3-ac26-b54916f6718f",
              "userId": "444441",
              "userName": "srtkjrthrt",
              "email": "[email protected]"
          }
      },
      {
          "data": {
              "ID": "b7f7ce8b-1455-41b3-ac26-b54916f6718f",
              "userId": "444441",
              "userName": "srthstrj",
              "email": "[email protected]"
          }
      },
      {
          "data": {
              "ID": "b7f7ce8b-1455-41b3-ac26-b54916f6718f",
              "userId": "444441",
              "userName": "cjghj1",
              "email": "[email protected]"
          }
      }
  ]
  const userList = records.map(record => record.data.userName)
  console.log(userList.join(', '))
}

foo()

Upvotes: 1

R9102
R9102

Reputation: 727

Here is the output

let obj = records.map(obj => {return obj.data.username});

console.log(obj)//cjtest.1

Thanks you @Weedoze @gaetanoM

Upvotes: 0

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