Javascript Math Floor Math Random

Math random used with math floor can be used to return random integers.

Javascript math floor math random.

The max min 1 is the logic that creates the range. In a nutshell one calls math floor when you want to truncate a decimal value to its nearest integer by just dropping the decimal portion. Math floor math random 10 1. So you would typically use that when you need an integer and you want the integer that is smaller than or equal to the decimal value.

Try it yourself. The floor method rounds a number downwards to the nearest integer and returns the result. Use math floor math random 256 to generate a number between 0 and 255. Math floor null returns 0 not a nan.

The math random function returns a floating point pseudo random number in the range 0 to less than 1 inclusive of 0 but not 1 with approximately uniform distribution over that range which you can then scale to your desired range. Math random will always generate a number that is strictly less than 1 i e 0 x 1 so math floor math random 255 will generate a random number between 0 and 254. Yes the results will be evenly distributed. So 3 9 becomes 3 2 1 becomes 2 etc.

Return a random number between 1 and 10. Description because floor is a static method of math you always use it as math floor rather than as a method of a math object you created math is not a constructor.