3.（JavaScript）随机生成一定长度的字符串

?随机生成一定长度的字符串

/**
 * 获得一个随机的字符串（只包含数字和字符）
 * @param {Integer} length 字符串的长度
 * @return 随机字符串
 */
export function randomString(length) {
  const BASE_NUMBER = '0123456789'
  const BASE_CHAR = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%^&*()_+-'
  const baseString = BASE_CHAR + BASE_NUMBER
  if (length < 1) {
    length = 1
  }
  let character = ''
  const baseLength = baseString.length
  for (let i = 0; i < length; i++) {
    const number = Math.floor(Math.random() * (baseLength))
    character += baseString.charAt(number)
  }
  return character
}