JavaScript - Sort objects by value but return key

Question

I have an Object like this:

object = {A: 15, B: 30, C: 22}

So I'm sorting it using its values. For that, I have this function:

object = {
  A: 15,
  B: 30,
  C: 22
}
function sortObjsValues(obj) {
  return Object.values(obj).sort((a, b) => {
    if (a > b) {
      return -1;
    } else if (a < b) {
      return 1;
    } else {
      return 0;
    }
  });
}

console.log(sortObjsValues(object)); // => returns 30,22,15

Is there a way to return its keys instead of its values, keeping sorting by its values? The final result would be B,C,A

Nina Scholz · Accepted Answer · 2021-04-20 12:18:40Z

4

You could get entries from the object, sort by value descending and map the keys.

const
    object = { A: 15, B: 30, C: 22 },
    getSortedKeys = o => Object
        .entries(o)
        .sort((a, b) => b[1] - a[1])
        .map(([k]) => k);

console.log(getSortedKeys(object));

answered Apr 20, 2021 at 12:18

Nina Scholz

388k26 gold badges367 silver badges417 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Thomas · Accepted Answer · 2021-04-20 12:28:26Z

2

Just sort the keys by the value.

const object = { A: 15, B: 30, C: 22 };

console.log(Object.keys(object).sort((a, b) => object[b] - object[a]));

answered Apr 20, 2021 at 12:28

Thomas

12.8k1 gold badge16 silver badges31 bronze badges

Collectives™ on Stack Overflow

JavaScript - Sort objects by value but return key

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related