Javascript generate random unique number every time

Question

Ok so i need to create four randomly generated numbers between 1-10 and they cannot be the same. so my thought is to add each number to an array but how can I check to see i

Answer 1

I'm using a recursive function. The test function pick 6 unique value between 1 and 9.

//test(1, 9, 6);

function test(min, max, nbValue){
    var result = recursValue(min, max, nbValue, []);
    alert(result);
}

function recursValue(min, max, nbValue, result){
    var randomNum = Math.random() * (max-min);
    randomNum = Math.round(randomNum) + min;

    if(!in_array(randomNum, result)){
        result.push(randomNum);
        nbValue--;
    }

    if(nbValue>0){
        recursValue(min, max, nbValue, result);
    }
    return result;
}

function in_array(value, my_array){
    for(var i=0;i< my_array.length; i++){
        if(my_array[i] == value){
            console.log(my_array+" val "+value);
            return true;   
        }        
    }
    return false;
}