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

Here is a recursive function what are you looking for.

"howMany" parameter is count of how many unique numbers you want to generate.
"randomize" parameter is biggest number that function can generate.

for example : rand(4,8) function returns an array that has 4 number in it, and the numbers are between 0 and 7 ( because as you know, Math.random() function generates numbers starting from zero to [given number - 1])

var array = [];
var isMatch= false;
function rand(howMany, randomize){
     if( array.length < howMany){
    var r = Math.floor( Math.random() * randomize );
    for( var i = 0; i < howMany; i++ ){
        if( array[i] !== r ){
           isMatch= false;
           continue;
            } else {
           isMatch= true;
           break;
        }
    }
    if( isMatch == false ){
       array.push(r);
           ran(howMany, randomize);
    }
        ran(howMany, randomize);
    return array;
     }
}