js实现金额的中文大写

要求：输入金额数字，输出它的中文大写形式（如输入1000则输出一千元整）；

//代码不包括校验输入合法部分

transform(number) {
        var judge = false;      //判断是否为整数
        var judgedivide = false;//判断是否被10整除
        var transformNumber = number.toString();
        var pointIndex = transformNumber.indexOf('.');
        var zeroindex = 0;
        if (pointIndex !== -1) {
          judge = true;
          var tail = transformNumber.split('.')[1].toString();
          transformNumber = transformNumber.split('.')[0];
        }
        var temp = parseInt(transformNumber);
        if (temp % 10 === 0) {
          for (var i = transformNumber.length - 1; i >= 0; i--) {
            if (transformNumber[i] !== '0') {
              zeroindex = transformNumber.length - i - 1;
              judgedivide = true;
              break;
            }
          }
        }
        //转置
        transformNumber = transformNumber.split("").reverse().join("");
        var numberIndex = ['零', '一', '二', '三', '四', '五', '六', '七', '八', '九', '十'];
        var biteIndex = ['零', '元', '十', '百', '千', '万', '十', '百', '千', '亿', '十', '百', '千', '万'];
        var head = '';
        if (transformNumber.length >= 6) {
          if (transformNumber[4] === '0') {
            for (var m = 5; m <= 7; m++) {
              if (transformNumber[m] !== '0') {
                biteIndex[m + 1] = biteIndex[m + 1] + '万';
                break;
              }
            }
          }
          if (transformNumber.length >= 9) {
            if (transformNumber[8] === '0') {
              for (var n = 9; n <= 12; n++) {
                if (transformNumber[n] !== '0') {
                  biteIndex[n + 1] = biteIndex[n + 1] + "亿";
                  break;
                }
              }
            }
          }
        }
        for (var i = transformNumber.length - 1; i >= zeroindex; i--) {
          if (transformNumber[i] !== '0') {
            head = head + numberIndex[transformNumber[i]] + biteIndex[i + 1];
          } else {
            if (head[head.length - 1] !== '零') {
              head = head + numberIndex[transformNumber[i]];
            }

          }

        }
        if (judge === true) {
          var liiteNumber = ['角', '分'], tailTemp = '';
          for (var j = 0; j < 2; j++) {
            tailTemp = tailTemp + numberIndex[tail[j]] + liiteNumber[j];
          }
          var endout = head + tailTemp;
        } else {
          var endout = head + '整';
        }
        window.alert(endout);

      },