js代码 填写小写的金额 , 自动输入大写

填写小写的金额 , 自动输入大写
**/
var stmp = "";
function nst(t)
{
 if(t.value==stmp) return;
 var ms = t.value.replace(/[^d.]/g,"").replace(/(.d{2}).+$/,"$1").replace(/^0+([1-9])/,"$1").replace(/^0+$/,"0");
 var txt = ms.split(".");
 while(/d{4}(,|$)/.test(txt[0]))
 txt[0] = txt[0].replace(/(d)(d{3}(,|$))/,"$1,$2");
 t.value = stmp = txt[0]+(txt.length>1?"."+txt[1]:"");
 bbb.value = number2num1(ms-0);
}
function number2num1(strg)
{
 var number = Math.round(strg*100)/100;
 number = number.toString(10).split('.');
 var a = number[0];
 if (a.length > 12)
 return "数值超出范围！支持的最大数值为 999999999999.99";
 var e = "零壹贰叁肆伍陆柒捌玖";
 var num1 = "";
 var len = a.length-1;
 for (var i=0 ; i<=len; i++)
 num1 += e.charAt(parseInt(a.charAt(i))) + [["圆","万","亿"][Math.floor((len-i)/4)],"拾","佰","仟"][(len-i)%4];
 if(number.length==2 && number[1]!="")
 {
  var a = number[1];
  for (var i=0 ; i<a.length; i++)
  num1 += e.charAt(parseInt(a.charAt(i))) + ["角","分"][i];
 }
 num1 = num1.replace(/零佰|零拾|零仟|零角/g,"零");
 num1 = num1.replace(/零{2,}/g,"零");
 num1 = num1.replace(/零(?=圆|万|亿)/g,"");
 num1 = num1.replace(/亿万/,"亿");
 num1 = num1.replace(/^圆零?/,"");
 if(num1!="" && !/分$/.test(num1))
 num1 += "整";
 return num1;
}
/**demo
小写金额：<input type="text" name="aaa" onkeyup="nst(this)"><br>
大写金额：<input type="text" name="bbb" size=80>
**/