JavaScript numbers to Words-第4页回答

I'm trying to convert numbers into english words, for example 1234 would become: "one thousand two hundred thirty four".

My Tactic goes like this:

Separate the digits to three and put them on Array (finlOutPut), from right to left.
Convert each group (each cell in the finlOutPut array) of three digits to a word (this what the triConvert function does). If all the three digits are zero convert them to "dontAddBigSuffix"
From Right to left, add thousand, million, billion, etc. If the finlOutPut cell equals "dontAddBigSufix" (because it was only zeroes), don't add the word and set the cell to " " (nothing).

It seems to work pretty well, but I've got some problems with numbers like 190000009, converted to: "one hundred ninety million". Somehow it "forgets" the last numbers when there are a few zeros.

What did I do wrong? Where is the bug? Why does it not work perfectly?

<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>

<script type="text/javascript">
function update(){
    var bigNumArry = new Array('', ' thousand', ' million', ' billion', ' trillion', ' quadrillion', ' quintillion');

    var output = '';
    var numString =   document.getElementById('number').value;
    var finlOutPut = new Array();

    if (numString == '0') {
        document.getElementById('container').innerHTML = 'Zero';
        return;
    }

    if (numString == 0) {
        document.getElementById('container').innerHTML = 'messeg tell to enter numbers';
        return;
    }

    var i = numString.length;
    i = i - 1;

    //cut the number to grups of three digits and add them to the Arry
    while (numString.length > 3) {
        var triDig = new Array(3);
        triDig[2] = numString.charAt(numString.length - 1);
        triDig[1] = numString.charAt(numString.length - 2);
        triDig[0] = numString.charAt(numString.length - 3);

        var varToAdd = triDig[0] + triDig[1] + triDig[2];
        finlOutPut.push(varToAdd);
        i--;
        numString = numString.substring(0, numString.length - 3);
    }
    finlOutPut.push(numString);
    finlOutPut.reverse();

    //conver each grup of three digits to english word
    //if all digits are zero the triConvert
    //function return the string "dontAddBigSufix"
    for (j = 0; j < finlOutPut.length; j++) {
        finlOutPut[j] = triConvert(parseInt(finlOutPut[j]));
    }

    var bigScalCntr = 0; //this int mark the million billion trillion... Arry

    for (b = finlOutPut.length - 1; b >= 0; b--) {
        if (finlOutPut[b] != "dontAddBigSufix") {
            finlOutPut[b] = finlOutPut[b] + bigNumArry[bigScalCntr] + ' , ';
            bigScalCntr++;
        }
        else {
            //replace the string at finlOP[b] from "dontAddBigSufix" to empty String.
            finlOutPut[b] = ' ';
            bigScalCntr++; //advance the counter  
        }
    }

        //convert The output Arry to , more printable string 
        for(n = 0; n<finlOutPut.length; n++){
            output +=finlOutPut[n];
        }

    document.getElementById('container').innerHTML = output;//print the output
}

//simple function to convert from numbers to words from 1 to 999
function triConvert(num){
    var ones = new Array('', ' one', ' two', ' three', ' four', ' five', ' six', ' seven', ' eight', ' nine', ' ten', ' eleven', ' twelve', ' thirteen', ' fourteen', ' fifteen', ' sixteen', ' seventeen', ' eighteen', ' nineteen');
    var tens = new Array('', '', ' twenty', ' thirty', ' forty', ' fifty', ' sixty', ' seventy', ' eighty', ' ninety');
    var hundred = ' hundred';
    var output = '';
    var numString = num.toString();

    if (num == 0) {
        return 'dontAddBigSufix';
    }
    //the case of 10, 11, 12 ,13, .... 19 
    if (num < 20) {
        output = ones[num];
        return output;
    }

    //100 and more
    if (numString.length == 3) {
        output = ones[parseInt(numString.charAt(0))] + hundred;
        output += tens[parseInt(numString.charAt(1))];
        output += ones[parseInt(numString.charAt(2))];
        return output;
    }

    output += tens[parseInt(numString.charAt(0))];
    output += ones[parseInt(numString.charAt(1))];

    return output;
}   
</script>

</head>
<body>

<input type="text"
    id="number"
    size="70"
    onkeyup="update();"
    /*this code prevent non numeric letters*/ 
    onkeydown="return (event.ctrlKey || event.altKey 
                    || (47<event.keyCode && event.keyCode<58 && event.shiftKey==false) 
                    || (95<event.keyCode && event.keyCode<106)
                    || (event.keyCode==8) || (event.keyCode==9) 
                    || (event.keyCode>34 && event.keyCode<40) 
                    || (event.keyCode==46) )"/>
                    <br/>
<div id="container">Here The Numbers Printed</div>
</body>
</html>

标签： javascript numbers

21条回答

裙下三千臣

2楼-- · 2019-01-01 01:45

<script src="http://www.ittutorials.in/js/demo/numtoword.js" type="text/javascript"></script>
    HTML - Convert numbers to words using JavaScript</h1>
<input id="Text1" type="text" onkeypress="return onlyNumbers(this.value);" onkeyup="NumToWord(this.value,'divDisplayWords');"
    maxlength="9" style="background-color: #efefef; border: 2px solid #CCCCC; font-size: large" />
<br />
<br />
<div id="divDisplayWords" style="font-size: 13; color: Teal; font-family: Arial;">
</div>

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笑指拈花

3楼-- · 2019-01-01 01:47

There are JS library for en_US and cs_CZ.
You can use it standalone or as Node module.

Numbers2Words

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人气声优

4楼-- · 2019-01-01 01:47

I tried Muhammad's solution, but had some issues and wanted to use decimals so I made some changes and converted to coffeescript and angular. Please bear in mind that js and coffeescript are not my strong suits, so use with care.

$scope.convert = (number, upper=0) ->
number = +number
# console.log "inside convert and the number is:  " + number

if number < 0
    # console.log 'Number Must be greater than zero = ' + number
    return ''

if number > 100000000000000000000
    # console.log 'Number is out of range = ' + number
    return ''
if isNaN(number)
    console.log("NOT A NUMBER")
    alert("Not a number = ")
    return ''
else
    console.log "at line 88 number is:  " + number
    quintillion = Math.floor(number / 1000000000000000000)
    ### quintillion ###

    number -= quintillion * 1000000000000000000
    quar = Math.floor(number / 1000000000000000)
    # console.log "at line 94 number is:  " + number

    ### quadrillion ###

    number -= quar * 1000000000000000
    trin = Math.floor(number / 1000000000000)
    # console.log "at line 100 number is:  " + number

    ### trillion ###
    number -= trin * 1000000000000
    Gn = Math.floor(number / 1000000000)
    # console.log "at line 105 number is:  " + number

    ### billion ###

    number -= Gn * 1000000000
    million = Math.floor(number / 1000000)
    # console.log "at line 111 number is:  " + number

    ### million ###

    number -= million * 1000000
    Hn = Math.floor(number / 1000)
    # console.log "at line 117 number is:  " + number

    ### thousand ###

    number -= Hn * 1000
    Dn = Math.floor(number / 100)
    # console.log "at line 123 number is:  " + number

    ### Tens (deca) ###

    number = number % 100
    # console.log "at line 128 number is:  " + number

    ### Ones ###
    tn      = Math.floor(number / 10)
    one     = Math.floor(number % 10)
    # tn = Math.floor(number / 1)
    change  = Math.round((number % 1) * 100)
    res     = ''
    # console.log "before ifs"
    if quintillion > 0
        res += $scope.convert(quintillion) + ' Quintillion'
    if quar > 0
        res += $scope.convert(quar) + ' Quadrillion'
    if trin > 0
        res += $scope.convert(trin) + ' Trillion'
    if Gn > 0
        res += $scope.convert(Gn) + ' Billion'
    if million > 0
        res += (if res == '' then '' else ' ') + $scope.convert(million) + ' Million'
    if Hn > 0
        res += (if res == '' then '' else ' ') + $scope.convert(Hn) + ' Thousand'
    if Dn
        res += (if res == '' then '' else ' ') + $scope.convert(Dn) + ' Hundred'
    # console.log "the result is:  " + res
    ones = Array('', 'One', 'Two', 'Three', 'Four', 'Five', 'Six', 'Seven', 'Eight', 'Nine', 'Ten', 'Eleven', 'Twelve', 'Thirteen', 'Fourteen', 'Fifteen', 'Sixteen', 'Seventeen', 'Eightteen', 'Nineteen')
    tens = Array('', '', 'Twenty', 'Thirty', 'Fourty', 'Fifty', 'Sixty', 'Seventy', 'Eigthy', 'Ninety')
    # console.log "the result at 161 is:  " + res
    if tn > 0 or one > 0
        if !(res == '')
            # res += ' and '
            res += ' '
            # console.log "the result at 164 is:  " + res
        if tn < 2
            res += ones[tn * 10 + one]
            # console.log "the result at 168is:  " + res
        else
            res += tens[tn]
            if one > 0
                res += '-' + ones[one]
            # console.log "the result at 173 is:  " + res
    if change > 0
        if res == ''
            res =  change + "/100"
        else
            res += ' and ' + change + "/100"

    if res == ''
        console.log 'Empty = ' + number
        res = ''
    if +upper == 1
        res = res.toUpperCase()
    $scope.newCheck.amountInWords = res
    return res

$scope.is_numeric = (mixed_var) -> # console.log "mixed var is: " + mixed_var (typeof mixed_var == 'number' or typeof mixed_var == 'string') and mixed_var != '' and !isNaN(mixed_var)

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