Select Specific Amount of Random Items From Object Array.

getRandom.js

  getRandom(arr, n) {
    let result = new Array(n),
        len = arr.length,
        taken = new Array(len);

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

    console.log(result);
  }