JavaScript Slot Machine Test

HTML

<ol class="slot-machine">
    <li>0</li>
    <li>0</li>
    <li>0</li>
    <li>0</li>
    <li>0</li>
    <li>0</li>
</ol>
<div style="clear:both">
    <button id="start">Start</button>
    <button id="stop1">Stop 1</button>
    <button id="stop2">Stop 2</button>
</div>

CSS

body {
    background: #1B325F;
}
.slot-machine li {
    color: #E9F2F9;
    width: 180px;
    height: 300px;
    float: left;
    font-size: 200px;
    font-family: Georgia;
    text-shadow: 5px 5px 5px rgba(0, 0, 0, 0.5);
}
.slot-machine li.result {
    font-size: 250px;
}
.slot-machine li.run {
    color: transparent;
    text-shadow: #fff 0 0 20px;
}

JavaScript

var stop1 = false;
var stop2 = false;

var words = [
	"cat",
  "space",
  "car",
  "rocket",
  "submarine",
  "blockchain",
  "machine learning",
  "boring machine",
  "dog",
  "cow"
];

$('#start').click(function() {
    stop1 = stop2 = false;
    
    $('.slot-machine li').addClass('run');
    $('.slot-machine li').removeClass('result');
    
    var t = 0;
    var run = function() {
        var c = 0;
        $('.slot-machine li').each(function() {
            if (c < 3) {
                if (!stop1) {
                    $(this).text(words[Math.floor(Math.random()*10)]);
                }
            }
            else {
                if (!stop2) {
                    $(this).text(words[Math.floor(Math.random()*10)]);
                }
            }
            
            c++;
        });
        t++;
        if (!stop1 || !stop2) {
            window.setTimeout(run, 50);
        }
        else {
            //$('.slot-machine li').removeClass('run');
        }
    };
    window.setTimeout(run, 50);
});

$('#stop1').click(function() {
    stop1 = true;
    var c = 0;
    $('.slot-machine li').each(function() {
        if (c < 3) {
            $(this).removeClass('run');
            $(this).addClass('result');
        }
        
        c++;
    });
});

$('#stop2').click(function() {
    stop2 = true;
    var c = 0;
    $('.slot-machine li').each(function() {
        if (c >= 3) {
            $(this).removeClass('run');
            $(this).addClass('result');
        }
        
        c++;
    });
});