js 字符串反转和创建随机字符串

js 字符串反转

const EMPTY = ''
function reserveString (str) {
  return str.split(EMPTY).reverse().join(EMPTY)
}

JS 创建随机字符串

    // 随机字符串字符集
const chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678'

// 创建随机字符串
export function makeRandom(n = 6) {
  let str = ''
  for (let i = 0; i < n; i++) {
    str += chars.charAt(Math.floor(Math.random() * chars.length))
  }
  return str
}