如何让math.random打印字符串

function generateRandomString(length) {
  let characters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
  let result = "";
  
  for (let i = 0; i < length; i++) {
    let randomIndex = Math.floor(Math.random() * characters.length);
    result += characters.charAt(randomIndex);
  }
  
  return result;
}

console.log(generateRandomString(10)); // 打印一个长度为10的随机字符串