How to leave the three largest numbers in an object?

Question

JavaScript

There is an object like this:

const object = {
  1: 1,
  2: 3,
  3: 3,
  4: 3,
  5: 0,
  6: 2,
  7: 1,
  8: 3
}

Ie keys from 1 to 8, and their values. It is necessary to leave 3 keys (i.e. leave key=value) with the largest values

Answer 1

We collect a new object:

const newObj = Object.fromEntries(Object
  .entries(obj)
  .sort((a, b) => a[1] - b[1])
  .slice(-3)
);

Delete the properties of an existing one:

Object
  .entries(obj)
  .sort((a, b) => b[1] - a[1])
  .slice(3)
  .forEach(n => delete obj[n[0]]);