数字大写转换

主函数
function DX(n) {
          if (!/^(0|[1-9]\d*)(\.\d+)?$/.test(n))
              return "数据非法";
          var unit = "千百拾亿千百拾万千百拾元角分", str = "";
          n += "00";
          var p = n.indexOf('.');
          if (p >= 0)
              n = n.substring(0, p) + n.substr(p + 1, 2);
          unit = unit.substr(unit.length - n.length);
          for (var i = 0; i < n.length; i++)
              str += '零壹贰叁肆伍陆柒捌玖'.charAt(n.charAt(i)) + unit.charAt(i);
          return str.replace(/零(千|百|拾|角)/g, "零").replace(/(零)+/g, "零").replace(/零(万|亿|元)/g, "$1").replace(/(亿)万|壹(拾)/g, "$1$2").replace(/^元零?|零分/g, "").replace(/元$/g, "元整");
      }

调用函数

    <script>

        //alert(DX(<%=mTotalAmount %>));
        document.getElementById("Text2").value = DX(<%=mTotalAmount %>);

    </script>

 

来源：https://www.cnblogs.com/howie/archive/2012/07/30/2615695.html