jknife/src/global/digitUppercase.js

javaScript工具库

/**
 * @description 数字转化为大写金额
 * @param {Number} n 数字
 * @return {String}
 * @interactive
 *
 * @example
 * console.log(digitUppercase(23150008)) // 贰仟叁佰壹拾伍万零捌元整
 */
function digitUppercase (n) {
  const fraction = ['角', '分']
  const digit = [
    '零', '壹', '贰', '叁', '肆',
    '伍', '陆', '柒', '捌', '玖'
  ]
  const unit = [
    ['元', '万', '亿'],
    ['', '拾', '佰', '仟']
  ]
  n = Math.abs(n)
  let s = ''
  for (let i = 0; i < fraction.length; i++) {
    s += (digit[Math.floor(n * 10 * Math.pow(10, i)) % 10] + fraction[i]).replace(/零./, '')
  }
  s = s || '整'
  n = Math.floor(n)
  for (let i = 0; i < unit[0].length && n > 0; i++) {
    let p = ''
    for (let j = 0; j < unit[1].length && n > 0; j++) {
      p = digit[n % 10] + unit[1][j] + p
      n = Math.floor(n / 10)
    }
    s = p.replace(/(零.)*零$/, '').replace(/^$/, '零') + unit[0][i] + s
  }
  return s.replace(/(零.)*零元/, '元')
    .replace(/(零.)+/g, '零')
    .replace(/^整$/, '零元整')
}

export default digitUppercase