js数字转大写

// 数字转大写
export default function toChies(amount) {
  //形参
  // 汉字的数字
  const cnNums = [
    "零",
    "壹",
    "贰",
    "叁",
    "肆",
    "伍",
    "陆",
    "柒",
    "捌",
    "玖",
  ];
  // 基本单位
  const cnIntRadice = ["", "拾", "佰", "仟"];
  // 对应整数部分扩展单位
  const cnIntUnits = ["", "万", "亿", "兆"];
  // 对应小数部分单位
  const cnDecUnits = ["角", "分"];
  // 整数金额时后面跟的字符
  const cnInteger = "整";
  // 整型完以后的单位
  const cnIntLast = "元";
  // 最大处理的数字
  const maxNum = 9999999999999999.99;
  // 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 (amount === "") {
    return "";
  }
  amount = parseFloat(amount);
  if (amount >= maxNum) {
    // 超出最大处理数字
    return "";
  }
  if (amount === 0) {
    chineseStr = cnNums[0] + cnIntLast + cnInteger;
    return chineseStr;
  }
  // 转换为字符串
  amount = amount.toString();
  if (amount.indexOf(".") === -1) {
    integerNum = amount;

    decimalNum = "";
  } else {
    parts = amount.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;
    const IntLen = integerNum.length;
    for (let i = 0; i < IntLen; i++) {
      const n = integerNum.substr(i, 1);
      const p = IntLen - i - 1;
      const q = p / 4;
      const m = p % 4;
      if (n === "0") {
        zeroCount++;
      } else {
        if (zeroCount > 0) {
          chineseStr += cnNums[0];
        }
        // 归零
        zeroCount = 0;
        //alert(cnNums[parseInt(n)])
        chineseStr += cnNums[parseInt(n)] + cnIntRadice[m];
      }
      if (m === 0 && zeroCount < 4) {
        chineseStr += cnIntUnits[q];
      }
    }
    chineseStr += cnIntLast;
  }
  // 小数部分
  if (decimalNum !== "") {
    const decLen = decimalNum.length;
    for (let i = 0; i < decLen; i++) {
      const 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;//转好的大写文字
}

标签：const,数字,decimalNum,大写,js,amount,chineseStr,cnNums,let
来源： https://blog.csdn.net/weixin_54682740/article/details/120622028