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Thread: Adding 2 currency values together

  1. #1
    Join Date
    Aug 2004
    Posts
    26

    Adding 2 currency values together

    Hello,

    I'm looking to add 2 currency values together, is this possible using Javascript? So basically I have values stored in 2 variables:

    var price1 = "19,99 EUR"
    var price2 = "9,99 EUR"

    Is there any way to add these together to produce a third variable equalling 29,98 EUR?

    Thanks in advance

  2. #2
    Join Date
    Jan 2005
    Posts
    3,067
    Even though this sound like a HW assignment:

    1.remove the " EUR" --> ex: price1=price1.replace(' EUR','');
    2. replace the comma with a period --> ex: price1=price1.replace(',','.');
    3. evaluate both as floats (toFixed(2) if needed) --> price1=parseFloat(price1).toFixed(2);
    4. add together --> price3=price1+price2;
    5. replace the period with a comma --> ex: price3=price3.replace('.',',');
    6. add the " EUR" --> price3=price3+' EUR';

    You can condense it down a bit, but that is the basic way to do it.

  3. #3
    Join Date
    Aug 2004
    Posts
    26
    Thanks, thats a big help As sometimes the currency can be different is there any way of instead of replacing the " EUR" bit, to cut the last 4 characters off instead and then adding the cut off bit back in at the end?

  4. #4
    Join Date
    Jan 2005
    Posts
    3,067
    You could use the substring() method to do that, or you can use split:

    Code:
    var price1 = "19,99 EUR";
    price1_split = price1.split(' ');
    price1 = price1_split[0];//19,99
    cur = price1_split[1];//EUR
    .
    .
    .
    price3 = price1+price2+' '+cur;
    then do the rest of the code.

  5. #5
    Join Date
    Aug 2004
    Posts
    26
    Thanks for this. However I tried it and when I attempt to document.write the result outputted is 19.999,99 EUR. Please could you help me find if I have something wrong in the code? Your help is a lifesaver!

    Code:
    var price1 = "19,99 EUR";
    price1_split = price1.split(' ');
    price1 = price1_split[0];//19,99
    cur = price1_split[1];//EUR
    
    
    var price2 = "9,99 EUR";
    
    price2_split = price2.split(' ');
    price2 = price2_split[0];//19,99
    
    
    price1=price1.replace(',','.');
    price2=price2.replace(',','.');
    price1=parseFloat(price1).toFixed(2);
    price2=parseFloat(price2).toFixed(2);
    price3=price1+price2;
     price3=price3.replace('.',',');
    price3 = price1+price2+' '+cur;
    
    
    
    document.write(price3);
    Last edited by denhamd2; 09-17-2008 at 11:11 AM.

  6. #6
    Join Date
    Jan 2005
    Posts
    3,067
    YOu need to put the last replace after the line below it:

    Code:
    <html>
    <head>
    <script type="text/javascript">
    function add(){
    var price1 = "19,99 EUR";
    price1_split = price1.split(' ');
    price1 = price1_split[0];
    cur = price1_split[1];
    
    
    var price2 = "9,99 EUR";
    
    price2_split = price2.split(' ');
    price2 = price2_split[0];//19,99
    
    price1=price1.replace(',','.');
    price2=price2.replace(',','.');
    
    price1=parseFloat(price1);
    price2=parseFloat(price2);
    price3=(price1+price2).toFixed(2);
    price3 = price3+' '+cur;
    price3=price3.replace('.',',');
    
    document.write(price3);
    return;
    }
    </script>
    </head>
    <body onload="add()">
    </body>
    </html>

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