rand()

Generates a random number.

With no parameters, it returns a random floating-point number between 0 and 1.

With one parameter, it returns a random integer in the range 0 to max.

With two parameters, it returns a random integer in the range min to max.

Syntax

rand()
rand(max)
rand(min, max)

Parameter	Type	Description
max	Number	Upper bound (inclusive). Used with a single parameter.	optional
min	Number	Lower bound (inclusive).	optional
max	Number	Upper bound (inclusive). Must be greater than min.	optional

Number (float) in the range [0, 1) if no parameters.
Number (integer) in the specified range when parameters are provided.
Raises exception in case of invalid usage (e.g., first parameter not smaller than the second).

rand();       // random float between 0 and 1

rand(10);     // random integer from 0 to 10

rand(5, 10);  // random integer from 5 to 10