Slot Machine Matching

HTML

<p>
  <span>Result 1:</span>
  <span class="result" id="result1"></span>
</p>
<p>
  <span>Result 2:</span>
  <span class="result" id="result2"></span>
</p>

CSS

span {
  font-weight: bold;
}

span.result {
  font-weight: normal;
}

JavaScript

var options = [
    "slot-2",
    "slot-3",
    "slot-5",
    "slot-5",
    "slot-4",
    "slot-3",
    "slot-1",
    "slot-4",
    "slot-1",
    "slot-2",
    "slot-2",
    "slot-4",
    "slot-5",
    "slot-1",
    "slot-4"
];

// convert selections to usable values and filter unique elements
function buildResults (arr) {
    return arr.map(function (index) {
        return options[index];
    }).filter(function (value, i, arr) {
        return arr.indexOf(value) === i;
    });
}

// if array has been reduced to the length of 1 it is a winner
function checkResults (results) {
    if (results.length === 1) return true;
    if (results.length !== 1) return false;
}

var result1 = checkResults(buildResults([0, 2, 3])),
		result2 = checkResults(buildResults([12, 2, 3]));;

document.querySelector('#result1').innerHTML = result1;
document.querySelector('#result2').innerHTML = result2;