parsefloat - Using toFixed(2) in JavaScript is producing undesired results - Stack Overflow

admin管理员组

文章数量:1344322

I'm doing this:

var refundAmount = parseFloat($('#refundAmount2').val().replace('$',''));
var refundReceived = $('#refundReceived');
var remainderAmount = refundAmount-parseFloat(refundReceived.val().replace('$',''));

alert(parseInt(remainderAmount).toFixed(2));

No matter what I do, the result always ends with 2 decimal places being '.00'. So if the first number is 200.12 and the second is 100.08, it should be alerting me with 100.04 but instead I get 100.00.

Why might this be happening?

I'm doing this:

var refundAmount = parseFloat($('#refundAmount2').val().replace('$',''));
var refundReceived = $('#refundReceived');
var remainderAmount = refundAmount-parseFloat(refundReceived.val().replace('$',''));

alert(parseInt(remainderAmount).toFixed(2));

No matter what I do, the result always ends with 2 decimal places being '.00'. So if the first number is 200.12 and the second is 100.08, it should be alerting me with 100.04 but instead I get 100.00.

Why might this be happening?

• javascript
• parsefloat
• tofixed

Share Improve this question Follow edited Oct 1, 2021 at 20:40 halfer 20.4k1919 gold badges109109 silver badges202202 bronze badges asked Apr 17, 2013 at 15:36 DamienDamien 4,3191010 gold badges4141 silver badges5454 bronze badges 1

• 2 parseInt(remainderAmount) converts the number to an integer and then toFixed(2) appends .00 to it. It might be undesired but it's the predictable result. I think you want alert(parseFloat(remainderAmount.toFixed(2))); – Ejaz Commented Apr 17, 2013 at 15:39

Add a ment  | 

2 Answers 2

Sorted by: Reset to default 7

You used parseInt to convert that number to an integer and then used toFixed(2) to convert it to a number with 2 decimal places. Adding 2 decimal places to an integer will always result in .00.

Try

alert(remainderAmount.toFixed(2));

See DEMO.

You're getting it as an int with parseInt(), then doing the toFixed(). So you're putting decimal places on an int.

本文标签： parsefloatUsing toFixed(2) in JavaScript is producing undesired resultsStack Overflow