Subtraction in JavaScript only returns two digits of the thousands - Stack Overflow

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I have two variables holding integer values:

x = 36,000;
y = 18,045.40;

this is how i subtract:

z = parseInt(x) - parseInt(y);

the result is 15.

If i remove the parseInt the result is 'Nan'.

How do I go about subtracting x with y without rounding off or removing thousands?

many thanks.

I have two variables holding integer values:

x = 36,000;
y = 18,045.40;

this is how i subtract:

z = parseInt(x) - parseInt(y);

the result is 15.

If i remove the parseInt the result is 'Nan'.

How do I go about subtracting x with y without rounding off or removing thousands?

many thanks.

• javascript
• subtraction

Share Improve this question Follow edited Dec 13, 2011 at 17:09 MacMac 35.4k5555 gold badges153153 silver badges224224 bronze badges asked Dec 13, 2011 at 16:50 Saint DeeSaint Dee 1,01566 gold badges2222 silver badges4343 bronze badges 1

• Don't gave mas in your value, also see this demo : Fiddle for this in which you have a idea to subtract two floating values even it is a positive or negative value... – lk.annamalai Commented Feb 21, 2013 at 5:07

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3 Answers 3

Sorted by: Reset to default 6

Don't put mas in your numbers.

The code you have posted won't even run. I would remend pulling the ,s out of your numbers and using parseFloat instead. This appears to give the result you want. Demo here:

http://jsfiddle/yVWA9/

code:

var x = 36000;
var y = 18045.40;

alert(parseFloat(x) - parseFloat(y));

There is no separator for thousands in Javascript. Your variables are either holding strings and not integer values or you are getting syntax error.

If you have strings and they cannot be changed (like received from service, etc.) then try this:

x = "36,000";
y = "18,045.40";

// remove mas and convert to numbers
function norm(num) { return +num.replace(',', ''); }

console.log(norm(x) - norm(y));

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