Weird division in js

Question

var x =67.2;
x/=10;

outputs 6.72000000001

how do I keep this from happening?

Answer 1

I think u can use [.toFixed(n)] method to determine how many numbers will appear after .

Note : write any number inside the method parantheses

e.g

var x = 67.2

x /= 10;

z = x.toFixed(2)

z = 6.72

Answer 2

The key word here is "floating point precision"