<html>
<head>
<title>转换数字大小写</title>
<meta charset="UTF-8">
<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("空输入");
return "";
}
if(currencyDigits.match(/[^,.d]/) != null){
alert("输入字符串中的无效字符!");
return;
}
if((currencyDigits).match(/^((d{1,3}(,d{3})*(.((d{3},)*d{1,3}))?)|(d+(.d+)?))$/) == null){
alert("非法数字位数格式!");
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("太大的数字无法转换！");
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 = 0;i < integral.length; i++){
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];
}
}
outputCharacters += CN_DOLLAR;
}
// Process decimal part if there is:
if(decimal != ""){
for (i = 0; i < decimal.length; i++){
d = decimal.substr(i, 1);
if(d !="0"){
outputCharacters += digits[Number(d)] + decimal[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>
</head>
<body>
<input type="text" size=20 id="input"/>
<input type="button" id="btn" value="Convert" />
<input type="text" size=60 id="output"/>
<script src="https://ajax.aspnetcdn.com/ajax/jquery/jquery-3.3.1.min.js"></script>
<script>
$('#btn').on('click',function (){
var s=convertCurrency($('#input').val());
//alert(s);
$('#output').val(s);
})
</script>
</body>
</html>