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JavaScript JavaScript Basics (Retired) Working With Numbers Create a random number

Guido 't Hooft
Guido 't Hooft
8,466 Points
Posted by Guido 't Hooft
Guido 't Hooft
8,466 Points

Can i use Math.floor(Math.random()* 6 + 1); instead of Math.floor(Math.random()* 6) + 1;? It both does the same thing.

Can i use Math.floor(Math.random()* 6 + 1); instead of Math.floor(Math.random()* 6) + 1;? It both does the same thing.

Just want to know if one is better then the other?

Guido

3 Answers

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

They both do exactly the same thing, because the "floor" function only affects the fractional part of a number. So you can add whole numbers before or after using "floor" and the result will be the same.

So the only possible advantage to either would be readability. I think the 2nd example is slightly better in that regard but I admit it's purely a personal judgement call.

Conor Vanoystaeyen
Conor Vanoystaeyen
16,687 Points
Conor Vanoystaeyen
Conor Vanoystaeyen
16,687 Points

I'm not sure but think Math.floor(Math.random()* 6) + 1; is better because then he first makes a number from 0 to 0.9 in brackets and then * 6 do before he +1 does. I think in the sense of calculation rules. But I can be wrong.

Guido 't Hooft
Guido 't Hooft
8,466 Points
Guido 't Hooft
Guido 't Hooft
8,466 Points

Oke great! Thanks for your answers!