creating & checking turkish identity numbers

tc-kimlik.js

function randomInteger (min, max) {
  return Math.floor(Math.random() * (max - min + 1)) + min;
};

function idGenerator () {
  let n = [];
  for (let i = 0; i < 9; i++) {
    n.push(randomInteger(1, 9));
  };

  n.push(((n[0]+n[2]+n[4]+n[6]+n[8]) * 7 - n[1]+n[3]+n[5]+n[7]) % 10); // 10th element
  n.push(n.reduce((a, b) => a + b, 0) % 10) // 11th element

  return n.join("");
};

function idChecker (id) {
  let n = typeof id !== Number ? id.split("").map(i=>Number(i)) : String(id).split("").map(i=>Number(i));
  return (((n[0]+n[2]+n[4]+n[6]+n[8]) * 7 - n[1]+n[3]+n[5]+n[7]) % 10 == n[9] && n.reduce((a, b, i) => i < 10 ? a + b : a, 0) % 10 == n[10]);
};