How to replace a comma for a dot and a dot for a comma

[vabby]

Hey guys.
I have a problem with my code, I can replace comma for a dot here. "var tvn = parseFloat(docu ment.getElement ById('ctl00_Con tentPlaceHolder 1_txtMillilTVNH raefni').value. replace(/,/g, '.')*14);" and multiply with 14, that works fine, but i can't replace a dot for a comma before I display the sum. In me country we use comma instead of a dot for separating decimal numbers

For example: a user has to be able to import 1,25 in a text box on my web site which changes to 1.25 before it's multiplied with 14 to get the sum of 17.5. But I have to change it to 17,5 before displaying. (which isn't working somehow)


Here is my code:

function calculateTVN() 
          {  
            if (document.getElementById    ('ctl00_ContentPlaceHolder1_txtMillilTVNHraefni').value != "")
            {
              var tvn = parseFloat(document.getElementById('ctl00_ContentPlaceHolder1_txtMillilTVNHraefni').value.replace(/,/g, '.')*14); 
              var tvns = tvn.replace (/\./g, ',');
 document.getElementById('ctl00_ContentPlaceHolder1_txtNidurstTVNHraefni').value = tvns.toFixed(2);
            }
          }

It would be nice if somebody could help me.

[Logician]

   var tvn = parseFloat(document.getElementById('ctl00_ContentPlaceHolder1_txtMillilTVNHraefni').value.replace(/,/g, '.')*14); 
              var tvns = tvn.replace (/\./g, ',');

I would prefer to multiply after the conversion:

   var tvn = parseFloat(document.getElementById('ctl00_ContentPlaceHolder1_txtMillilTVNHraefni').value.replace(/,/g, '.'))*14;

but you should test the value returned from parseFloat with isNaN.

tvn is a number and therefore does not have a replace method.

Try

 var tvns = tvn.toString().replace (/\./g, ',');

[iam_clint]

[font=Verdana][size=2]

[/size][/font]
<script>
function calculateTVN() { 
 if (document.getElementById ("ctl00_ContentPlaceHolder1_txtMillilTVNHraefni").value != "") {
   var tvn = parseFloat(document.getElementById("ctl00_ContentPlaceHolder1_txtMillilTVNHraefni").value.replace(/,/gi, '.')*14); 
   tvn += ""; // convert it to a string instead of integer to do the regular expression.
   var tvns = tvn.replace(/\./gi, ",");
   document.getElementById("ctl00_ContentPlaceHolder1_txtNidurstTVNHraefni").value = tvns;
 }
} 
</script>
<input type="text" id="ctl00_ContentPlaceHolder1_txtMillilTVNHraefni"><input type="text" id="ctl00_ContentPlaceHolder1_txtNidurstTVNHraefni"><input type="button" value="calculate" onclick="calculateTVN();">

This is how i got it to work,

[iam_clint]

logician beat me to it.

[vabby]

Thank you very much guys. It works perfectly ;)

[vabby]

Hey guys,
Change comma fore a dot and a dot for a comma works perfectly.
Now I have a problem with some numbers, for example if user put in 1,9 it displays 26,59999, I have lost the function .toFixed(2) in “document.getEl ementById('ctl0 0_ContentPlaceH older1 _txtNidurstTVNH raefni').value = tvns.toFixed(2) ;” do you know how to fix that.

Thanks again.

[vabby]

function calculateTVN() 
            { 
             if (document.getElementById ("ctl00_ContentPlaceHolder1_txtMillilTVNHraefni").value != "") 
             {
                    var tvn = parseFloat(document.getElementById("ctl00_ContentPlaceHolder1_txtMillilTVNHraefni").value.replace(/,/gi, '.'))*14;
                    var tvna  = tvn.toFixed(2);
                    //tvn += ""; // convert it to a string instead of integer to do the RE
                    var tvns = tvna.toString().replace(/\./gi, ",");
                    document.getElementById("ctl00_ContentPlaceHolder1_txtNidurstTVNHraefni").value = tvns;
             }
         }

It works like that TANKS

[iam_clint]

whoops forgot i took the tofixed out of it i was going to move it somewhere else in the code because to fixed won't work with a ,

glad you figured it out. :)

[sivadhanekula]

int num=0, p=0,d=0;
sscanf(num,"%d.%d",&p,&d) ; 
sprintf(num,"%d,%d",p,d) ;

Dont forget to include #include<string .h>

[acoder]

This is a thread in the JavaScript forum and you've given code for C - two very different programming realms. Anyway, thanks for your input.

[neovantage]

Thanks for this great discussion. it really helps me to sort out my problem too. As i also need to show comma instead of dot as dot does not recognise in Germany.