Javascript unexpected result

Question

I am doing an calculation in java script but i am facing a problem due to precision in decimal numbers. I can not post the exact calculation but this is what i am doing which leads to an unexpected result

When i write : alert(100.01-36.01); // result is 64

But when i write : alert(100.01-37.01); //result is 63.00000000000001

and it goes on like this for 38.01....so on. Can any please help me to why this is showing such an unexpected behavior. I am stuck in a calculation.

Thanks in advance.

Answer 1

Try this :

<script type="text/javascript">
var n1 = parseFloat(100.01);
var n2 = parseFloat(37.01);
var res = (n1-n2)
alert(res.toFixed(2));
</script>