Convert digits into words with JavaScript

Question

I am making a code which converts the given amount into words, heres is what I have got after googling. But I think its a little lengthy code to achieve a simple task. Two R

Answer 1

Though, this question has been answered - still I want to share something I recently developed in java script (based on the logic of an old C#. Net implementation I found in Internet) for converting Indian currency values to Words. It can handle up to 40 digits. You can have a look.

Usage: InrToWordConverter.Initialize();. var inWords = InrToWordConverter.ConvertToWord(amount);

Implementation:

htPunctuation = {};
listStaticSuffix = {};
listStaticPrefix = {};
listHelpNotation = {};

var InrToWordConverter = function () {

};

InrToWordConverter.Initialize = function () {
    InrToWordConverter.LoadStaticPrefix();
    InrToWordConverter.LoadStaticSuffix();
    InrToWordConverter.LoadHelpofNotation();
};

InrToWordConverter.ConvertToWord = function (value) {
    value = value.toString();

    if (value) {
        var tokens = value.split(".");
        var rsPart = "";
        var psPart = "";
        if (tokens.length === 2) {
            rsPart = String.trim(tokens[0]) || "0";
            psPart = String.trim(tokens[1]) || "0";
        }
        else if (tokens.length === 1) {
            rsPart = String.trim(tokens[0]) || "0";
            psPart = "0";
        }
        else {
            rsPart = "0";
            psPart = "0";
        }

        htPunctuation = {};
        var rsInWords = InrToWordConverter.ConvertToWordInternal(rsPart) || "Zero";
        var psInWords = InrToWordConverter.ConvertToWordInternal(psPart) || "Zero";

        var result = "Rupees " + rsInWords + "and " + psInWords + " Paise.";
        return result;
    }
};

InrToWordConverter.ConvertToWordInternal = function (value) {
    var convertedString = "";
    if (!(value.toString().length > 40))
    {
        if (InrToWordConverter.IsNumeric(value.toString()))
        {
            try
            {
                var strValue = InrToWordConverter.Reverse(value);
                switch (strValue.length)
                {
                    case 1:
                        if (parseInt(strValue.toString()) > 0) {
                            convertedString = InrToWordConverter.GetWordConversion(value);
                        }
                        else {
                            convertedString = "Zero ";
                        }
                        break;
                    case 2:
                        convertedString = InrToWordConverter.GetWordConversion(value);
                        break;
                    default:
                        InrToWordConverter.InsertToPunctuationTable(strValue);
                        InrToWordConverter.ReverseHashTable();
                        convertedString = InrToWordConverter.ReturnHashtableValue();
                        break;
                }
            }
            catch (exception) {
                convertedString = "Unexpected Error Occured <br/>";
            }
        }
        else {
            convertedString = "Please Enter Numbers Only, Decimal Values Are not supported";
        }
    }
    else {
        convertedString = "Please Enter Value in Less Then or Equal to 40 Digit";
    }
    return convertedString;
};

InrToWordConverter.IsNumeric = function (valueInNumeric) {
    var isFine = true;
    valueInNumeric = valueInNumeric || "";
    var len = valueInNumeric.length;
    for (var i = 0; i < len; i++) {
        var ch = valueInNumeric[i];
        if (!(ch >= '0' && ch <= '9')) {
            isFine = false;
            break;
        }
    }
    return isFine;
};

InrToWordConverter.ReturnHashtableValue = function () {
    var strFinalString = "";
    var keysArr = [];
    for (var key in htPunctuation) {
        keysArr.push(key);
    }
    for (var i = keysArr.length - 1; i >= 0; i--) {
        var hKey = keysArr[i];
        if (InrToWordConverter.GetWordConversion((htPunctuation[hKey]).toString()) !== "") {
            strFinalString = strFinalString + InrToWordConverter.GetWordConversion((htPunctuation[hKey]).toString()) + InrToWordConverter.StaticPrefixFind((hKey).toString());
        }
    }
    return strFinalString;
};

InrToWordConverter.ReverseHashTable = function () {
    var htTemp = {};
    for (var key in htPunctuation) {
        var item = htPunctuation[key];
        htTemp[key] = InrToWordConverter.Reverse(item.toString());
    }
    htPunctuation = {};
    htPunctuation = htTemp;
};

InrToWordConverter.InsertToPunctuationTable = function (strValue) {
    htPunctuation[1] = strValue.substr(0, 3).toString();
    var j = 2;
    for (var i = 3; i < strValue.length; i = i + 2) {
        if (strValue.substr(i).length > 0) {
            if (strValue.substr(i).length >= 2) {
                htPunctuation[j] = strValue.substr(i, 2).toString();
            }
            else {
                htPunctuation[j] = strValue.substr(i, 1).toString();
            }
        }
        else {
            break;
        }
        j++;

    }
};

InrToWordConverter.Reverse = function (strValue) {
    var reversed = "";
    for (var i in strValue) {
        var ch = strValue[i];
        reversed = ch + reversed;
    }
    return reversed;
};

InrToWordConverter.GetWordConversion = function (inputNumber) {
    var toReturnWord = "";
    if (inputNumber.length <= 3 && inputNumber.length > 0) {
        if (inputNumber.length === 3) {
            if (parseInt(inputNumber.substr(0, 1)) > 0) {
                toReturnWord = toReturnWord + InrToWordConverter.StaticSuffixFind(inputNumber.substr(0, 1)) + "Hundred ";
            }

            var tempString = InrToWordConverter.StaticSuffixFind(inputNumber.substr(1, 2));

            if (tempString === "")
            {
                toReturnWord = toReturnWord + InrToWordConverter.StaticSuffixFind(inputNumber.substr(1, 1) + "0");
                toReturnWord = toReturnWord + InrToWordConverter.StaticSuffixFind(inputNumber.substr(2, 1));
            }
            toReturnWord = toReturnWord + tempString;
        }
        if (inputNumber.length === 2)
        {
            var tempString = InrToWordConverter.StaticSuffixFind(inputNumber.substr(0, 2));
            if (tempString === "")
            {
                toReturnWord = toReturnWord + InrToWordConverter.StaticSuffixFind(inputNumber.substr(0, 1) + "0");
                toReturnWord = toReturnWord + InrToWordConverter.StaticSuffixFind(inputNumber.substr(1, 1));
            }
            toReturnWord = toReturnWord + tempString;
        }
        if (inputNumber.length === 1)
        {
            toReturnWord = toReturnWord + InrToWordConverter.StaticSuffixFind(inputNumber.substr(0, 1));
        }

    }
    return toReturnWord;
};

InrToWordConverter.StaticSuffixFind = function (numberKey) {
    var valueFromNumber = "";
    for (var key in listStaticSuffix) {
        if (String.trim(key.toString()) === String.trim(numberKey)) {
            valueFromNumber = listStaticSuffix[key].toString();
            break;
        }
    }
    return valueFromNumber;
};

InrToWordConverter.StaticPrefixFind = function (numberKey) {
    var valueFromNumber = "";
    for (var key in listStaticPrefix) {
        if (String.trim(key) === String.trim(numberKey)) {
            valueFromNumber = listStaticPrefix[key].toString();
            break;
        }
    }
    return valueFromNumber;
};

InrToWordConverter.StaticHelpNotationFind = function (numberKey) {
    var helpText = "";
    for (var key in listHelpNotation) {
        if (String.trim(key.toString()) === String.trim(numberKey)) {
            helpText = listHelpNotation[key].toString();
            break;
        }
    }
    return helpText;
};

InrToWordConverter.LoadStaticPrefix = function () {
    listStaticPrefix[2] = "Thousand ";
    listStaticPrefix[3] = "Lac ";
    listStaticPrefix[4] = "Crore ";
    listStaticPrefix[5] = "Arab ";
    listStaticPrefix[6] = "Kharab ";
    listStaticPrefix[7] = "Neel ";
    listStaticPrefix[8] = "Padma ";
    listStaticPrefix[9] = "Shankh ";
    listStaticPrefix[10] = "Maha-shankh ";
    listStaticPrefix[11] = "Ank ";
    listStaticPrefix[12] = "Jald ";
    listStaticPrefix[13] = "Madh ";
    listStaticPrefix[14] = "Paraardha ";
    listStaticPrefix[15] = "Ant ";
    listStaticPrefix[16] = "Maha-ant ";
    listStaticPrefix[17] = "Shisht ";
    listStaticPrefix[18] = "Singhar ";
    listStaticPrefix[19] = "Maha-singhar ";
    listStaticPrefix[20] = "Adant-singhar ";
};

InrToWordConverter.LoadStaticSuffix = function () {
    listStaticSuffix[1] = "One ";
    listStaticSuffix[2] = "Two ";
    listStaticSuffix[3] = "Three ";
    listStaticSuffix[4] = "Four ";
    listStaticSuffix[5] = "Five ";
    listStaticSuffix[6] = "Six ";
    listStaticSuffix[7] = "Seven ";
    listStaticSuffix[8] = "Eight ";
    listStaticSuffix[9] = "Nine ";
    listStaticSuffix[10] = "Ten ";
    listStaticSuffix[11] = "Eleven ";
    listStaticSuffix[12] = "Twelve ";
    listStaticSuffix[13] = "Thirteen ";
    listStaticSuffix[14] = "Fourteen ";
    listStaticSuffix[15] = "Fifteen ";
    listStaticSuffix[16] = "Sixteen ";
    listStaticSuffix[17] = "Seventeen ";
    listStaticSuffix[18] = "Eighteen ";
    listStaticSuffix[19] = "Nineteen ";
    listStaticSuffix[20] = "Twenty ";
    listStaticSuffix[30] = "Thirty ";
    listStaticSuffix[40] = "Fourty ";
    listStaticSuffix[50] = "Fifty ";
    listStaticSuffix[60] = "Sixty ";
    listStaticSuffix[70] = "Seventy ";
    listStaticSuffix[80] = "Eighty ";
    listStaticSuffix[90] = "Ninty ";
};

InrToWordConverter.LoadHelpofNotation = function () {
    listHelpNotation[2] = "=1,000 (3 Trailing Zeros)";
    listHelpNotation[3] = "=1,00,000 (5 Trailing Zeros)";
    listHelpNotation[4] = "=1,00,00,000 (7 Trailing Zeros)";
    listHelpNotation[5] = "=1,00,00,00,000 (9 Trailing Zeros)";
    listHelpNotation[6] = "=1,00,00,00,00,000 (11 Trailing Zeros)";
    listHelpNotation[7] = "=1,00,00,00,00,00,000 (13 Trailing Zeros)";
    listHelpNotation[8] = "=1,00,00,00,00,00,00,000 (15 Trailing Zeros)";
    listHelpNotation[9] = "=1,00,00,00,00,00,00,00,000 (17 Trailing Zeros)";
    listHelpNotation[10] = "=1,00,00,00,00,00,00,00,00,000 (19 Trailing Zeros)";
    listHelpNotation[11] = "=1,00,00,00,00,00,00,00,00,00,000 (21 Trailing Zeros)";
    listHelpNotation[12] = "=1,00,00,00,00,00,00,00,00,00,00,000 (23 Trailing Zeros)";
    listHelpNotation[13] = "=1,00,00,00,00,00,00,00,00,00,00,00,000 (25 Trailing Zeros)";
    listHelpNotation[14] = "=1,00,00,00,00,00,00,00,00,00,00,00,00,000 (27 Trailing Zeros)";
    listHelpNotation[15] = "=1,00,00,00,00,00,00,00,00,00,00,00,00,00,000 (29 Trailing Zeros)";
    listHelpNotation[16] = "=1,00,00,00,00,00,00,00,00,00,00,00,00,00,00,000 (31 Trailing Zeros)";
    listHelpNotation[17] = "=1,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,000 (33 Trailing Zeros)";
    listHelpNotation[18] = "=1,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,000 (35 Trailing Zeros)";
    listHelpNotation[19] = "=1,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,000 (37 Trailing Zeros)";
    listHelpNotation[20] = "=1,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,000 (39 Trailing Zeros)";
};
    if (!String.trim) {
    String.trim = function (str) {
        var result = "";
        var firstNonWhiteSpaceFound = false;
        var startIndex = -1;
        var endIndex = -1;
        if (str) {
            for (var i = 0; i < str.length; i++) {
                if (firstNonWhiteSpaceFound === false) {
                    if (str[i] === ' ' || str[i] === '\t') {
                        continue;
                    }
                    else {
                        firstNonWhiteSpaceFound = true;
                        startIndex = i;
                        endIndex = i;
                    }
                }
                else {
                    if (str[i] === ' ' || str[i] === '\t') {
                        continue;
                    }
                    else {
                        endIndex = i;
                    }
                }
            }
            if (startIndex !== -1 && endIndex !== -1) {
                result = str.slice(startIndex, endIndex + 1);
            }
        }
        return result;
    };
}

Answer 2

Try this code with a Turkish currency compliant JavaScript

function dene() {
         var inpt = document.getElementById("tar1").value;
         var spt = inpt.split('');
         spt.reverse();

         var tek = ["", "Bir", "İki", "Üç", "Dört", "Beş", "Altı", "Yedi", "Sekiz", "Dokuz"];
         var onlu = ["", "On", "Yirmi", "Otuz", "Kırk", "Elli", "Atmış", "Yetmiş", "Seksen", "Doksan"];
         var Yuz = ["", "Yüz", "İkiYüz", "Üçyüz", "DörtYüz", "BeşYüz", "AltıYüz", "YediYüz", "SekizYüz", "DokuzYüz"];
         var ska = ["", "", "", "", "Bin", "Milyon", "Milyar", "Trilyon", "Katrilyon", "Kentilyon"];
         var i, j;
         var bas3 = "";
         var bas6 = "";
         var bas9 = "";
         var bas12 = "";
         var total;

               for(i = 0; i < 1; i++) {

                      bas3 += Yuz[spt[i+2]] + onlu[spt[i+1]] + tek[spt[i]];
                      bas6 += Yuz[spt[i+5]] + onlu[spt[i+4]] + tek[spt[i+3]] + ska[4];
                      bas9 += Yuz[spt[i+8]] + onlu[spt[i+7]] + tek[spt[i+6]] + ska[5];
                      bas12 += Yuz[spt[i+11]] + onlu[spt[i+10]] + tek[spt[i+9]] + ska[6];


                   if(inpt.length < 4) {
                       bas6 = '';
                       bas9 = '';
                   }
                   if(inpt.length > 6 && inpt.slice(5, 6) == 0) {
                     bas6 = bas6.replace(/Bin/g, '');
                   }
                   if(inpt.length < 7) {
                       bas9 = '';
                   } 
                   if(inpt.length > 9 && inpt.slice(1,3) == 000){
                       bas9 = bas9.replace(/Milyon/g, '');
                   }

                   if(inpt.length < 10) {
                    bas12 = '';
                 }
             }

         total = bas12 + bas9 + bas6 + bas3;
         total = total.replace(NaN, '');
         total = total.replace(undefined, '');

        document.getElementById('demo').innerHTML = 
            total;


     }

Answer 3

If you need with Cent then you may use this one

        <script>
            var iWords = ['zero', ' one', ' two', ' three', ' four', ' five', ' six', ' seven', ' eight', ' nine'];
            var ePlace = ['ten', ' eleven', ' twelve', ' thirteen', ' fourteen', ' fifteen', ' sixteen', ' seventeen', ' eighteen', ' nineteen'];
            var tensPlace = ['', ' ten', ' twenty', ' thirty', ' forty', ' fifty', ' sixty', ' seventy', ' eighty', ' ninety'];
            var inWords = [];

            var numReversed, inWords, actnumber, i, j;

            function tensComplication() {
            if (actnumber[i] == 0) {
                inWords[j] = '';
            } else if (actnumber[i] == 1) {
                inWords[j] = ePlace[actnumber[i - 1]];
            } else {
                inWords[j] = tensPlace[actnumber[i]];
            }
            }

            function convertAmount() {
                var numericValue = document.getElementById('bdt').value;
                numericValue = parseFloat(numericValue).toFixed(2);

                var amount = numericValue.toString().split('.');
                var taka = amount[0];
                var paisa = amount[1];
                document.getElementById('container').innerHTML = convert(taka) +" taka and "+ convert(paisa)+" paisa only";
            }
            function convert(numericValue) {
            inWords = []
            if(numericValue == "00" || numericValue =="0"){
                return 'zero';
            }
            var obStr = numericValue.toString();
            numReversed = obStr.split('');
            actnumber = numReversed.reverse();


            if (Number(numericValue) == 0) {
                document.getElementById('container').innerHTML = 'BDT Zero';
                return false;
            }

            var iWordsLength = numReversed.length;
            var finalWord = '';
            j = 0;
            for (i = 0; i < iWordsLength; i++) {
                switch (i) {
                    case 0:
                        if (actnumber[i] == '0' || actnumber[i + 1] == '1') {
                            inWords[j] = '';
                        } else {
                            inWords[j] = iWords[actnumber[i]];
                        }
                        inWords[j] = inWords[j] + '';
                        break;
                    case 1:
                        tensComplication();
                        break;
                    case 2:
                        if (actnumber[i] == '0') {
                            inWords[j] = '';
                        } else if (actnumber[i - 1] !== '0' && actnumber[i - 2] !== '0') {
                            inWords[j] = iWords[actnumber[i]] + ' hundred';
                        } else {
                            inWords[j] = iWords[actnumber[i]] + ' hundred';
                        }
                        break;
                    case 3:
                        if (actnumber[i] == '0' || actnumber[i + 1] == '1') {
                            inWords[j] = '';
                        } else {
                            inWords[j] = iWords[actnumber[i]];
                        }
                        if (actnumber[i + 1] !== '0' || actnumber[i] > '0') {
                            inWords[j] = inWords[j] + ' thousand';
                        }
                        break;
                    case 4:
                        tensComplication();
                        break;
                    case 5:
                        if (actnumber[i] == '0' || actnumber[i + 1] == '1') {
                            inWords[j] = '';
                        } else {
                            inWords[j] = iWords[actnumber[i]];
                        }
                        if (actnumber[i + 1] !== '0' || actnumber[i] > '0') {
                            inWords[j] = inWords[j] + ' lakh';
                        }
                        break;
                    case 6:
                        tensComplication();
                        break;
                    case 7:
                        if (actnumber[i] == '0' || actnumber[i + 1] == '1') {
                            inWords[j] = '';
                        } else {
                            inWords[j] = iWords[actnumber[i]];
                        }
                        inWords[j] = inWords[j] + ' crore';
                        break;
                    case 8:
                        tensComplication();
                        break;
                    default:
                        break;
                }
                j++;
            }


            inWords.reverse();
            for (i = 0; i < inWords.length; i++) {
                finalWord += inWords[i];
            }
            return finalWord;
            }

        </script>

        <input type="text" name="bdt" id="bdt" />
        <input type="button" name="sr1" value="Click Here" onClick="convertAmount()"/>

        <div id="container"></div>

js fiddle

Here taka mean USD and paisa mean cent

Answer 4

You can check my version from github. It is not so hard way. I test this for the numbers between 0 and 9999, but you can extend array if you would like digits to words

Answer 5

I have created customized function ntsConvert() to convert number to words

function ntsConvert(value) {
let input = String(value).split('');
let mapData = {
	"0": "Zero",
	"1": "One",
	"2": "Two",
	"3": "Three",
	"4": "Four",
	"5": "Five",
	"6": "Six",
	"7": "Seven",
	"8": "Eight",
	"9": "Nine"
};
let output = '';
var tempArray = []
for (let i = 0; i < input.length; i++) {
	tempArray.push(mapData[input[i]])
}
output = tempArray.join(' ');
return output;
}

console.log(ntsConvert(12345)) // 'One Two Three Four Five'

Answer 6

Converting the input string into a number rather than keeping it as a string, limits the solution to the maximum allowed float / integer value on that machine/browser. My script below handles currency up to 1 Trillion dollars - 1 cent :-). I can be extended to handle up to 999 Trillions by adding 3 or 4 lines of code.

var ones = ["","One","Two","Three","Four","Five","Six","Seven","Eight",
            "Nine","Ten","Eleven","Twelve","Thirteen","Fourteen",
            "Fifteen","Sixteen","Seventeen","Eighteen","Nineteen"]; 

var tens = ["","","Twenty","Thirty","Forty","Fifty","Sixty","Seventy",
            "Eighty","Ninety"]; 


function words999(n999)   {    // n999 is an integer less than or equal to 999.
//
// Accept any 3 digit int incl 000 & 999 and return words.
// 

    var words = ''; var Hn = 0; var n99 = 0;

    Hn = Math.floor(n999 / 100);                  // # of hundreds in it

    if (Hn > 0)   {                               // if at least one 100

      words = words99(Hn) + " Hundred";           // one call for hundreds
    }

    n99 = n999 - (Hn * 100);                      // subtract the hundreds.

    words += ((words == '')?'':' ') + words99(n99); // combine the hundreds with tens & ones.

    return words;
}                            // function words999( n999 )

function words99(n99)   {    // n99 is an integer less than or equal to 99.
//
// Accept any 2 digit int incl 00 & 99 and return words.
// 

    var words = ''; var Dn = 0; var Un = 0;

    Dn = Math.floor(n99 / 10);           // # of tens

    Un = n99 % 10;                       // units

    if (Dn > 0 || Un > 0) {

      if (Dn < 2) {

        words += ones[Dn * 10 + Un];     // words for a # < 20

      } else {

        words += tens[Dn];

        if (Un > 0) words += "-" + ones[Un];
      }
    }                               // if ( Dn > 0 || Un > 0 )

    return words;
}                                   // function words99( n99 )

function getAmtInWords(id1, id2) {  // use numeric value of id1 to populate text in id2 
//
// Read numeric amount field and convert into word amount
// 

    var t1 = document.getElementById(id1).value;

    var t2 = t1.trim();

    amtStr = t2.replace(/,/g,'');        // $123,456,789.12 = 123456789.12

    dotPos = amtStr.indexOf('.');        // position of dot before cents, -ve if it doesn't exist.

    if (dotPos > 0) {

      dollars = amtStr.slice(0,dotPos);  // 1234.56 = 1234
      cents   = amtStr.slice(dotPos+1);  // 1234.56 = .56

    } else if (dotPos == 0) {

      dollars = '0';
      cents   = amtStr.slice(dotPos+1);  // 1234.56 = .56

    } else {

      dollars = amtStr.slice(0);         // 1234 = 1234
      cents   = '0'; 
    }

    t1      = '000000000000' + dollars;  // to extend to trillion, use 15 zeros
    dollars =  t1.slice(-12);            // and -15 here.

    billions  = Number(dollars.substr(0,3));
    millions  = Number(dollars.substr(3,3));
    thousands = Number(dollars.substr(6,3));
    hundreds  = Number(dollars.substr(9,3));

    t1 = words999(billions);    bW = t1.trim();   // Billions  in words

    t1 = words999(millions);    mW = t1.trim();   // Millions  in words

    t1 = words999(thousands);   tW = t1.trim();   // Thousands in words

    t1 = words999(hundreds);    hW = t1.trim();   // Hundreds  in words

    t1 = words99(cents);        cW = t1.trim();   // Cents     in words

    var totAmt = '';

    if (bW != '')   totAmt += ((totAmt != '') ? ' '  : '') + bW + ' Billion';
    if (mW != '')   totAmt += ((totAmt != '') ? ' '  : '') + mW + ' Million';
    if (tW != '')   totAmt += ((totAmt != '') ? ' '  : '') + tW + ' Thousand';
    if (hW != '')   totAmt += ((totAmt != '') ? ' '  : '') + hW + ' Dollars';

    if (cW != '')   totAmt += ((totAmt != '') ? ' and ' : '') + cW + ' Cents';

//  alert('totAmt = ' + totAmt);    // display words in a alert

    t1 = document.getElementById(id2).value;

    t2 = t1.trim();

    if (t2 == '')  document.getElementById(id2).value = totAmt;

    return false;
}                        // function getAmtInWords( id1, id2 )

// ======================== [ End Code ] ====================================