Random.org VS JavaScript

<html>
    <head>
        <script src="http://code.jquery.com/jquery-1.11.3.min.js"></script>
        <script>
            function runTest(randSample)
            {
                var maxRun = 0; //the highest straight run of the same results (ex 10 heads in a row)
                var currentRun = 0; //the current highest run while looking at the results since the last change in result
                var runsCount = 0; //how many runs of x length where x = $runsAmount
                var runsAmount = 5; //the number of results in a row that counts as a suspicious run
                var zerosTotal = 0; //the current count of zeros(heads)
                var onesTotal = 0; //the current count of ones(tails)
                var lastResult = -1; //keep track of the last result to check for runs

                for (index = 0; index < randSample.length; index++)
                {
                    var result = randSample[index]; //The current result we are looking at

                    if(result.trim() == "")
                    {
                        continue; //this is just to make sure the result is there and it's not empty
                    }

                    //keeps track of the longest run of heads or tails
                    if(lastResult == result)
                    {
                        currentRun = currentRun + 1;
                    }
                    else
                    {
                        if(currentRun > maxRun)
                        {
                            maxRun = currentRun;
                        }
                        if(currentRun >= runsAmount)
                        {
                            runsCount = runsCount + 1;
                        }
                        currentRun = 0;
                    }

                    //keeps track of how many zeros (heads) are in the set
                    if(result == 0)
                    {
                        zerosTotal = zerosTotal + 1;
                    }

                    //keeps track of how many ones (tails) are in the set
                    if(result == 1)
                    {
                        onesTotal = onesTotal + 1;
                    }

                    lastResult = result;
                }

                totalFlips = zerosTotal + onesTotal;

                return "<b>Heads:</b> " + zerosTotal + "/" + totalFlips + " flips<br><b>Tails:</b> " + onesTotal + "/" + totalFlips + " flips<br><b>Highest run length:</b> " + maxRun + " in a row<br><b>Total count of runs lasting " + runsAmount + " flips or more:</b> " + runsCount;
            }

            $(document).ready(function () {
                var numberOfTests = 10000;  //10,000 is the max random.org can create at once
                $.ajax({
                    url: "https://www.random.org/integers/?num=" + numberOfTests + "&min=0&max=1&col=1&base=10&format=html&rnd=new",
                    success: function (data) {

                        //This code creates the random.org RNG results
                        $('#RNG').html(runTest($(data).find('pre').html().split("")));

                        var randSample = [];

                        //This code creates the javascript RNG results
                        for (index = 0; index < numberOfTests; index++)
                        {
                            randSample[index] = '' + Math.floor((Math.random() * 2));
                        }
                        $('#PRNG').html(runTest(randSample));
                    },
                    error: function (data){
                        $('div').html('There was an error getting to Random.org\'s website');
                    }
                });
            });
        </script>
    </head>
    <body>
        <h1>Random Test</h1>
        <p>Definition of a "Run": A run is when you get the same result (heads or tails) in a row. For instance if you get 10 heads in a row it would be called a run of 10.<p>
        <h2>Random.org RNG results</h2>
        <div id="RNG"></div>
        <h2>Javascipts RNG results</h2>
        <div id="PRNG"></div>
    </body>
</html>