Is there a modulus operator in Unity JavaScript?

Questions & Answers
1

is there a mod operator? example c = b%a or c = b mod a e.g., 5%2 = 1

2

Yes,

if(Time.frameCount%10 == 0)

returns true every 10 frames

3

If you are looking for a math function though, just use Javascripts %-operator.

Meaning, if you want to calculate number mod 2 use number%2

The value of this operation is the division remainder (9%2 = 1)

4

You can. Just Do (a = a % b) because (a %= b) does not work...

5

The % operator is the Remainder operator
Example:

-3 % 3 → 0

-2 % 3 → -2

-1 % 3 → -1

0 % 3 → 0

1 % 3 → 1

2 % 3 → 2

3 % 3 → 0

To do a real Modulo, you need to make or find a function similar to this:

function modulo(dividend : int, divisor : int) : int {
    return (((dividend) % divisor) + divisor) % divisor;
}

Results:

-3 % 3 → 0

-2 % 3 → 1

-1 % 3 → 2

0 % 3 → 0

1 % 3 → 1

2 % 3 → 2

3 % 3 → 0

Notice you get the same 0, 1, 2 cycle even when you reach the negative numbers. With this, you can get a consistent indexing for say like enumerators or arrays.

Note:
This assumption is from Google calculator’s -2 % 3 = 1 in contrast with JavaScripts -2 % 3 = -2.