function convertCurrency(money) {

  //汉字的数字

  var cnNums = new Array('零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖')

  //基本单位

  var cnIntRadice = new Array('', '拾', '佰', '仟')

  //对应整数部分扩展单位

  var cnIntUnits = new Array('', '万', '亿', '兆')

  //对应小数部分单位

  var cnDecUnits = new Array('角', '分', '毫', '厘')

  //整数金额时后面跟的字符

  var cnInteger = '整'

  //整型完以后的单位

  var cnIntLast = '元'

  //最大处理的数字

  var maxNum = 999999999999999.9999

  //金额整数部分

  var integerNum

  //金额小数部分

  var decimalNum

  //输出的中文金额字符串

  var chineseStr = ''

  //分离金额后用的数组，预定义

  var parts

  if (money == '') { return '' }

  money = parseFloat(money)

  if (money >= maxNum) {

    //超出最大处理数字

    return ''

  }

  if (money == 0) {

    chineseStr = cnNums[0] + cnIntLast + cnInteger

    return chineseStr

  }

  //转换为字符串

  money = money.toString()

  if (money.indexOf('.') == -1) {

    integerNum = money

    decimalNum = ''

  } else {

    parts = money.split('.')

    integerNum = parts[0]

    decimalNum = parts[1].substr(0, 4)

  }

  //获取整型部分转换

  if (parseInt(integerNum, 10) > 0) {

    var zeroCount = 0

    var IntLen = integerNum.length

    for (var i = 0 i < IntLen i++) {

      var n = integerNum.substr(i, 1)

      var p = IntLen - i - 1

      var q = p / 4

      var m = p % 4

      if (n == '0') {

        zeroCount++

      } else {

        if (zeroCount > 0) {

          chineseStr += cnNums[0]

        }

        //归零

        zeroCount = 0

        chineseStr += cnNums[parseInt(n)] + cnIntRadice[m]

      }

      if (m == 0 && zeroCount < 4) {

        chineseStr += cnIntUnits[q]

      }

    }

    chineseStr += cnIntLast

  }

  //小数部分

  if (decimalNum != '') {

    var decLen = decimalNum.length

    for (var i = 0 i < decLen i++) {

      var 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

}

<script>

function convertCurrency(currencyDigits) {

// Constants:

var MAXIMUM_NUMBER = 99999999999.99

// Predefine the radix characters and currency symbols for output:

var CN_ZERO = "零"

var CN_ONE = "壹"

var CN_TWO = "贰"

var CN_THREE = "叁"

var CN_FOUR = "肆"

var CN_FIVE = "伍"

var CN_SIX = "陆"

var CN_SEVEN = "柒"

var CN_EIGHT = "捌"

var CN_NINE = "玖"

var CN_TEN = "拾"

var CN_HUNDRED = "佰"

var CN_THOUSAND = "仟"

var CN_TEN_THOUSAND = "万"

var CN_HUNDRED_MILLION = "亿"

var CN_SYMBOL = "人民币"

var CN_DOLLAR = "元"

var CN_TEN_CENT = "角"

var CN_CENT = "分"

var CN_INTEGER = "整"

// Variables:

var integral // Represent integral part of digit number.

var decimal // Represent decimal part of digit number.

var outputCharacters // The output result.

var parts

var digits, radices, bigRadices, decimals

var zeroCount

var i, p, d

var quotient, modulus

// Validate input string:

currencyDigits = currencyDigits.toString()

if (currencyDigits == "") {

alert("请输入小写金额！")

return ""

}

if (currencyDigits.match(/[^,.\d]/) != null) {

alert("小写金额含有无效字符！")

return ""

}

if ((currencyDigits).match(/^((\d{1,3}(,\d{3})*(.((\d{3},)*\d{1,3}))?)|(\d+(.\d+)?))$/) == null) {

alert("小写金额的格式不正确！")

return ""

}

// Normalize the format of input digits:

currencyDigits = currencyDigits.replace(/,/g, "") // Remove comma delimiters.

currencyDigits = currencyDigits.replace(/^0+/, "") // Trim zeros at the beginning.

// Assert the number is not greater than the maximum number.

if (Number(currencyDigits) >MAXIMUM_NUMBER) {

alert("金额过大，应小于1000亿元！")

return ""

}

// Process the coversion from currency digits to characters:

// Separate integral and decimal parts before processing coversion:

parts = currencyDigits.split(".")

if (parts.length >1) {

integral = parts[0]

decimal = parts[1]

// Cut down redundant decimal digits that are after the second.

decimal = decimal.substr(0, 2)

}

else {

integral = parts[0]

decimal = ""

}

// Prepare the characters corresponding to the digits:

digits = new Array(CN_ZERO, CN_ONE, CN_TWO, CN_THREE, CN_FOUR, CN_FIVE, CN_SIX, CN_SEVEN, CN_EIGHT, CN_NINE)

radices = new Array("", CN_TEN, CN_HUNDRED, CN_THOUSAND)

bigRadices = new Array("", CN_TEN_THOUSAND, CN_HUNDRED_MILLION)

decimals = new Array(CN_TEN_CENT, CN_CENT)

// Start processing:

outputCharacters = ""

// Process integral part if it is larger than 0:

if (Number(integral) >0) {

zeroCount = 0

for (i = 0i <integral.lengthi++) {

p = integral.length - i - 1

d = integral.substr(i, 1)

quotient = p / 4

modulus = p % 4

if (d == "0") {

zeroCount++

}

else {

if (zeroCount >0)

{

outputCharacters += digits[0]

}

zeroCount = 0

outputCharacters += digits[Number(d)] + radices[modulus]

}

if (modulus == 0 &&zeroCount <4) {

outputCharacters += bigRadices[quotient]

zeroCount = 0

}

}

outputCharacters += CN_DOLLAR

}

// Process decimal part if there is:

if (decimal != "") {

for (i = 0i <decimal.lengthi++) {

d = decimal.substr(i, 1)

if (d != "0") {

outputCharacters += digits[Number(d)] + decimals[i]

}

}

}

// Confirm and return the final output string:

if (outputCharacters == "") {

outputCharacters = CN_ZERO + CN_DOLLAR

}

if (decimal == "") {

outputCharacters += CN_INTEGER

}

outputCharacters = CN_SYMBOL + outputCharacters

return outputCharacters

}

</script>