Random integer in a certain range excluding one number

Question

I would like get a random number in a range excluding one number (e.g. from 1 to 1000 exclude 577). I searched for a solution, but never solved my issue.

I want some

Answer 1

You could just continue generating the number until you find it suits your needs:

function randomExcluded(start, end, excluded) {
    var n = excluded
    while (n == excluded)
        n = Math.floor((Math.random() * (end-start+1) + start));
    return n;
}

myRandom = randomExcluded(1, 10000, 577);

By the way this is not the best solution at all, look at my other answer for a better one!