Javascript Weird Bug (?)

Asked Jan 26 '13 at 14:57

Active Jan 26 '13 at 14:57

Viewed 33 times

Possible Duplicate:
Is JavaScript’s Floating-Point Math Broken?

While coding, I came across something weird in Javascript. I'm not sure it's a bug. Maybe I just don't know why it happens but it looks really weird to me, so I made a simplified example of it. Here it is.

I have this code:

var v = 0.01;
for(var i=0;i<21;i++){ 
    if(i % 4 == 0 && i!=0){
        v += 0.01;
    }
}

What I'm expecting to be true:

v == 0.06;

What is actually true:

v == 0.060000000000000005;

Can someone explain why I get this instead of what I'm expecting? Thanks.

edited May 23 '17 at 10:24

Community

asked Jan 26 '13 at 14:57

Kosmas Papadatos

1,277
2
14
32

Take a look at floating point precision. – Sirko Jan 26 '13 at 14:58
... it is not a bug see this http://stackoverflow.com/questions/588004/is-javascripts-floating-point-math-broken – farmer1992 Jan 26 '13 at 14:59
It is common "problem" with floating point numbers. Use `toFixed(2)` to *fix* the problem. – VisioN Jan 26 '13 at 15:00

Javascript Weird Bug (?)

0 Answers0