Random values from Array (from Stack Overflow)

A.Random values from array.md

Random values from array

index.ts

function getRandom(arr, n) {
  const result = new Array(n);
  let len = arr.length;
  const taken = new Array(len);
  
  if (n > len)
      throw new RangeError("getRandom: more elements taken than available");
  while (n--) {
      const x = Math.floor(Math.random() * len);
      result[n] = arr[x];
      taken[x] = --len in taken ? taken[len] : len;
  }
  return result;
}

const array = [1, 2, 3, 4, 5, 6, 7, 8];
const number = 2;

console.log(getRandom(array, number));