sino.js

function generate (min, max) {
  document.querySelectorAll('#rounded-corner>tbody>tr').forEach((e, i) => {
    const n = Math.floor(Math.random() * (max - min + 1)) + min;
    const q = `#K${(i + 1).toString().padStart(2, 0)}${Math.ceil(n / 3)}${((n - 1) % 3 + 1)}`
    document.querySelector(q).checked = true;
  })
}