How do i access an object's key but i want to pass the key as a variable

Question

for example:

object = {
  name: "Mike",
  age: 15
}

object.age // returns 15 right?

But I want to pass the 'age' key as a variable name:

object = {
  name: "Mike",
  age: 15
}

const age = 10.toString()

How do I get the result of something like this:

object.`${age}`

`object[age]`, but `10.toString()` is syntactically invalid, and it's uncertain, why you'd want the string `'10'` to begin with. Don't you want `'age'`? — ASDFGerte, Dec 26 '21 at 16:52

score 1 · Answer 1 · answered Dec 26 '21 at 16:54

1

Try

object["age"]

or

var propName='age'
object[propName]

answered Dec 26 '21 at 16:54

Boluc Papuccuoglu

score 0 · Answer 2 · answered Dec 26 '21 at 16:56

0

You can simply do this by

object[age]

answered Dec 26 '21 at 16:56

Gahan Vig

score 0 · Answer 3 · answered Dec 26 '21 at 16:59

0

Properties can be accessed by either . (dot notation) or via brackets [] that is:

object[key_name]
// where key_name is a variable
object["some_key"] // {"some_key":"value"} or {some_value:"value"}
object[19] // {19:"some_value"}

answered Dec 26 '21 at 16:59

Soyokaze

score 0 · Answer 4 · answered Dec 26 '21 at 17:27

0

var object = { name: "Mike"
             , age : 15
             },
    {age}  = object;

console.log(age);

answered Dec 26 '21 at 17:27

Redu

4 Answers4