parseFloat rounding

Question

I have javascript function that automatically adds input fields together, but adding numbers like 1.35 + 1.35 + 1.35 gives me an output of 4.050000000000001, just as an exam

Answer 1

var num = 4.050000000000001;

num = num.toFixed(2);

toFixed will round up depending on how many digits after the decimal you're looking for.