How to get all values of a specific key in array of objects?

I have array of objects like this

const object1 = {
  a: 'somestring',
  b: 42,
  c: false
};
const object2 = {
  a: 'somestring2',
  b: 42,
  c: false
};
const object3 = {
  a: 'somestring3',
  b: 42,
  c: false
};
const arr = [object1,object2,object3]

i want to get all the values of ‘a’ key.
so result be

['somestring','somestring2','somestring3']

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I tried Object.values() but it gets me all values of all keys, which is not the desired output.

>Solution :

Just use map() function:

const arr = [object1,object2,object3].map(({a}) => (a))

An example:

const object1 = {
  a: 'somestring',
  b: 42,
  c: false
};
const object2 = {
  a: 'somestring2',
  b: 42,
  c: false
};
const object3 = {
  a: 'somestring3',
  b: 42,
  c: false
};
const arr = [object1,object2,object3].map(({a}) => (a))
console.log(arr)