随机数生成

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

function randomStr(len = 8) {
  const chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
  return Array.from({ length: len }, () => chars[Math.floor(Math.random() * chars.length)]).join("");
}

function randomColor() {
  return "#" + Math.floor(Math.random() * 0xffffff).toString(16).padStart(6, "0");
}