阿拉伯数字转中国数字

支持转换范围 0~99

  • 输入：num = “10”

  • 输出：’十’

  • 输入：num = “15”

  • 输出：’十五’

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const transformNum = (num) => {
    const chars = (num + '').split('')
    const capitalNum = '零一二三四五六七八九十'
    if (num <= 10) {
      return capitalNum[num] || num
    }
    let split = ''
    if (num >= 10 && num < 100 && (num % 10 !== 0)) {
      split = '十'
    }
    const str = chars.map(char => {
      if (char == 0) char = 10
      return capitalNum[char] || ''
    }).join(split)
    return num < 20 ? str.slice(-2) : str
}