Javascript random number generator

function CreateNumbers(amount, min, max){
    let numbers = "";
    for(let i = 0 ; i < amount ; i++){
    if(i == 0)
            numbers = numbers  +  Math.floor((Math.random() * max) + min);
    else
        numbers = numbers + ";" +  Math.floor((Math.random() * max) + min);
    }
copy(numbers);
}