Rounding decimal numbers using toFixed

Question

I have small issue with the JavaScript function toFixed(2).

If I round this decimal number 45.24859, I get 45.25 using this function.

But my problem is, if I round 10 (it has no decimal part), the function will return a decimal number 10.00.

How can I fix this issue?

My problem is, if enter a number without a decimal part, the function should return a non decimal number.

possible duplicate of [Round up to 2 decimal places in javascript](http://stackoverflow.com/questions/11832914/round-up-to-2-decimal-places-in-javascript) — Sarath, Nov 04 '13 at 11:48
please note that this has NOTHING to do with jQuery in the slightest. — Sterling Archer, May 19 '14 at 15:08

Tushar Gupta - curioustushar · Accepted Answer · 2013-10-29T07:01:33.007

7

Another way to solve this

function roundNumber(num){
   return (num.toString().indexOf(".") !== -1) ? num.toFixed(2) : num;
}

Below solution not compatible with all browsers.

or

function roundNumber(num){
   return (num.toString().contains(".")) ? num.toFixed(2) : num;
}

edited Oct 29 '13 at 07:01

answered Oct 29 '13 at 06:37

score 6 · Answer 2 · edited May 23 '17 at 11:53

6

We can check the number is decimal or not with this Check if a number has a decimal...

So combining that you can use this function

function roundNumber(num){
   return num % 1 != 0 ? num.toFixed(2) : num;
}

Or I think better option will be to use

Math.round(num * 100) / 100

edited May 23 '17 at 11:53

Community

answered Oct 29 '13 at 06:35

Sarath

2 Answers2