JavaScript not showing exact value in calculations

Question

I would like to know why there is always some difference in value, when I perform the below calculations.

var amt=1000;
var cr= 3.02;
var net = (cr/100)*amt;
console.log(net); //shows 29.02 instead of 30.02

I dont think that percentage sign is doing what you think it is. — zero298, Jun 12 '19 at 03:14
Possible duplicate of [How to deal with floating point number precision in JavaScript?](https://stackoverflow.com/questions/1458633/how-to-deal-with-floating-point-number-precision-in-javascript) — Heretic Monkey, Jun 12 '19 at 03:19
There won't be any difference. It will always output `30.200000000000003` — Umair Sarfraz, Jun 12 '19 at 03:19

score 1 · Accepted Answer · answered Jun 12 '19 at 03:19

1

You can do * before /.

var amt = 1000;
var cr = 3.02;
var net = cr * amt / 100;
console.log(net);

answered Jun 12 '19 at 03:19

Julian Lin

1 Answers1