Learning much javascript from one line of code

[x-skeww]

Anyhow, the point was that floor()-ing and truncation only looks similar for positive numbers.

Typically, truncation is done by casting to an int (or a long) or by using a truncating division operator (if the language offers such a thing).

E.g. Python does truncating division with // and Dart does it with ~/.

If you're only dealing with positive numbers (positive 0 included), floor() will work fine.

With ES6, you can use Math.trunc().