js金额转大写数字

//金额转大写数字
const intToChinese = money => {
  //汉字的数字
  let cnNums = new Array('零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖');
  //基本单位
  let cnIntRadice = new Array('', '拾', '佰', '仟');
  //对应整数部分扩展单位
  let cnIntUnits = new Array('', '万', '亿', '兆');
  //对应小数部分单位
  let cnDecUnits = new Array('角', '分', '毫', '厘');
  //整数金额时后面跟的字符
  let cnInteger = '整';
  //整型完以后的单位
  let cnIntLast = '元';
  //最大处理的数字
  let maxNum = 999999999999999.9999;
  //金额整数部分
  let integerNum;
  //金额小数部分
  let decimalNum;
  //输出的中文金额字符串
  let chineseStr = '';
  //分离金额后用的数组，预定义
  let parts;
  if (money == '') { return ''; }
  money = parseFloat(money);
  if (money >= maxNum) {
    //超出最大处理数字
    return '';
  }
  if (money == 0) {
    chineseStr = cnNums[0] + cnIntLast + cnInteger;
    return chineseStr;
  }
  //转换为字符串
  money = money.toString();
  if (money.indexOf('.') == -1) {
    integerNum = money;
    decimalNum = '';
  } else {
    parts = money.split('.');
    integerNum = parts[0];
    decimalNum = parts[1].substr(0, 4);
  }
  //获取整型部分转换
  if (parseInt(integerNum, 10) > 0) {
    let zeroCount = 0;
    let IntLen = integerNum.length;
    for (let i = 0; i < IntLen; i++) {
      let n = integerNum.substr(i, 1);
      let p = IntLen - i - 1;
      let q = p / 4;
      let m = p % 4;
      if (n == '0') {
        zeroCount++;
      } else {
        if (zeroCount > 0) {
          chineseStr += cnNums[0];
        }
        //归零
        zeroCount = 0;
        chineseStr += cnNums[parseInt(n)] + cnIntRadice[m];
      }
      if (m == 0 && zeroCount < 4) {
        chineseStr += cnIntUnits[q];
      }
    }
    chineseStr += cnIntLast;
  }
  //小数部分
  if (decimalNum != '') {
    let decLen = decimalNum.length;
    for (let i = 0; i < decLen; i++) {
      let n = decimalNum.substr(i, 1);
      if (n != '0') {
        chineseStr += cnNums[Number(n)] + cnDecUnits[i];
      }
    }
  }
  if (chineseStr == '') {
    chineseStr += cnNums[0] + cnIntLast + cnInteger;
  } else if (decimalNum == '') {
    chineseStr += cnInteger;
  }
  return chineseStr;
};

export default intToChinese;