Javascript Weird Loop Behaviour

Question

This is a very strange javascript behaviour, anyone can explain that ?

for(var i=0; i < 0.2 ; i += 0.05)
   {
    console.log(i);
   }

Return in console :

0 
0.05 
0.1 
0.15000000000000002

0.15000000000000002 ?

What is this ?

It's IEEE's floating number's issue. http://stackoverflow.com/questions/588004/is-javascripts-floating-point-math-broken — Herrington Darkholme, Jan 24 '14 at 11:20
Recommend to see https://github.com/MikeMcl/big.js/ or https://github.com/MikeMcl/bignumber.js/ — Herrington Darkholme, Jan 24 '14 at 11:26

score 1 · Accepted Answer · edited May 23 '17 at 11:49

1

You should read about floating point numbers. http://en.wikipedia.org/wiki/Floating_point

edited May 23 '17 at 11:49

Community

answered Jan 24 '14 at 11:20

Silviu Burcea

1 Answers1