Avoiding problems with JavaScript's weird decimal calculations

Question

I just read on MDN that one of the quirks of JS\'s handling of numbers due to everything being \"double-precision 64-bit format IEEE 754 values\" is that when you d

Answer 1

(Math.floor(( 0.1+0.2 )*1000))/1000

This will reduce the precision of float numbers but solves the problem if you are not working with very small values. For example:

.1+.2 =
0.30000000000000004

after the proposed operation you will get 0.3 But any value between:

0.30000000000000000
0.30000000000000999

will be also considered 0.3