JavaScript generate random number except some values

Question

I\'m generating random numbers from 1 to 20 by calling generateRandom(). How can I exclude some values, say 8 and 15?

function generateRandom(mi         


        

Answer 1

I think it should be like this, if you want good distribution on all numbers. and, for this solution, it is required to higher max than 15 and lower min that 8

function generateRandom(min, max) {
    var v =  Math.floor(Math.random() * (max - min + 1 - 2)) + min;
    if (v == 8) return max-1;
    else if (v == 15) return max-2;
    else return v;
}

var test = generateRandom(1, 20)