Roblox Name Sniper

// Join here: http://www.v3rmillion.net/member.php?action=register&referrer=3224
/* For this to work go to http://api.roblox.com/ and paste this in */
var Username = prompt("Enter names to check", "Separate each name with a space").split(" ");
var WorkingNames = ["Created By Scripted on Vermillion.net"];
var check = "";
var i =0;

function SendData(){

        var xhr = ("XMLHttpRequest" in window) ? new XMLHttpRequest() : new ActiveXObject("Msxml3.XMLHTTP");
    xhr.open("GET", 'http://api.roblox.com/users/get-by-username?username=' + Username[i], true);
    xhr.onreadystatechange = function() {
        if (xhr.readyState === 4) {
            var serverResponse = xhr.responseText;

            if (serverResponse == "{\"success\":false,\"errorMessage\":\"User not found\"}") {
                console.log("The username " + Username[i-1] + " is not taken"); //i used this for debugging
                WorkingNames.push(Username[i-1]);
            }else{
                console.log("Name was taken");
            }
        }
    };
    xhr.send(null);
}

function LogNames(){
        for (var i = 0; i < WorkingNames.length; i++) {
        check = check + "\r\n "+  WorkingNames[i];
        check = check.replace("undefined","");
        }
}

function Loop(){
    setTimeout(function(){
        if(i < Username.length){
            SendData();
            i++;
            Loop();

        }else{
            LogNames();
            console.log("Your name snipes are:\r\n " +check + "\r\n WARNING: THIS BOT IS NOT CASE SENSITIVE SO SOME RESULTS MAY HAVE BEEN REMOVED FROM THE NAME SNIPE LIST.");
            console.log("Please refresh the page, and paste the bot in to try again.");
        }
    },1000); // Change the speed here.
}Loop();