转换为大写金额

var DM = {
        /**
         * 金额大写转换函数
         */
        cnyNumber4CN: function(n) {
            n = DM.unfmtAmt(n);
            if("" == n){
                return "";
            }
            if (!/^(0|[1-9]\d*)(\.\d+)?$/.test(n))
                return "零元整";
            var unit = "万仟佰拾亿仟佰拾万仟佰拾元角分", str = "";
            n += "00";
            var p = n.indexOf(‘.‘);
            if (p >= 0)
                n = n.substring(0, p) + n.substr(p + 1, 2);
            unit = unit.substr(unit.length - n.length);
            for ( var i = 0; i < n.length; i++) {
                str += ‘零壹贰叁肆伍陆柒捌玖‘.charAt(n.charAt(i)) + unit.charAt(i);
            }
            str = str.replace(/零(仟|佰|拾|角)/g, "零")
                     .replace(/(零)+/g, "零")
                     .replace(/零(万)/g, "万零")
                     .replace(/零(亿)/g, "亿零")
                     .replace(/零(元)/g, "元零")
                     .replace(/(零)+/g, "零")
                     .replace(/^元零?|零分/g, "")
                     .replace(/零元/g, "元")
                     .replace(/零(万|亿)/g, "")
                     .replace(/亿万/g, "亿")
                     .replace(/元$/g, "元整 ");
            if (str == "分") {
                str = "零元整";
            }
            return str;
        },

        /**
         * 金额去格式化
         */
        unfmtAmt: function(s){
            return s.replace(/,/g,"").replace(/(^\s*)|(\s*$)/g, "");
        }
};

调用实例：
cap:function(){
        var capital=$("#TRAN_AMT").val();
            var ca=DM.cnyNumber4CN(capital);
        $("#capital").val(ca);
        },
        capital").val(ca);
=========================
                    <li>
                        <div class="colL">
                            <label>转账金额：</label>
                        </div>
                        <div class="col">
                           <input type="text" id="TRAN_AMT"  onblur="App.cap()">
                        </div>
                    </li>
                    <li>
                        <div class="colL">
                            <label>大写金额：</label>
                        </div>
                        <div class="col">
                           <span id="capital"></span>
                        </div>
                    </li>