how to use Math.random() and Math.floor() in javascript to generate a random number between 30 and 90 ?

https://developer.mozilla.org/en-US/docs/JavaScrip...

// Returns a random integer between min and max

// Using Math.round() will give you a non-uniform distribution!

function getRandomInt(min, max) {

    return Math.floor(Math.random() * (max - min + 1)) + min;

}

- Dominic

Is it a must that you use floor()? Why not generate a random between 0 and 60, then just add 30 to it?

30+Math.floor(Math.random()*61)

^--- That is for 30 and 90 inclusive.