JSFiddle - React, Tailwind, and code Playground

by DaveAlger

HTML

<div id="controls">
<div id="purse_size">number of coins: <input id="nc" type="text" value="10" maxlength="3" style="width:40px" /></div>
<button id="go" class="btn-blue"><span>flip coins</span></button>
<button id="stop" class="btn"><span>stop</span></button>
</div>

<br/><br/><br/>

<div id="total_heads" class="txt-green">Heads: 1</div>
<div id="total_tails" class="txt-blue">Tails: 0</div>

<br/><br/>

<div id="purse">
    <div class="coin"></div>
</div>

CSS

* {
    font-family: sans-serif;
}

.txt-green {
font-size: 24px;
color: #3E9651;
}

.txt-blue {
font-size: 24px;
color: #396AB1;
}

.txt-silver {
font-size: 24px;
color: #dadada;
}

#controls {
    width: 500px;
}

#purse_size {
    float: right;
}

#purse {
}

#stop {
    display: none;
}


.coin {
    cursor: pointer;
    float: left;
    background: url("http://davealger.com/apps/coinflip/heads.png");
    background-size: 100% 100%;
    width: 100px;
    height: 100px;
    margin: 4px;
    border-radius: 100%;
    
}
.heads{
    background: url("http://davealger.com/apps/coinflip/heads.png");
    background-size: 100% 100%;
    width: 100px;
    height: 100px;
    margin: 4px;
    border-radius: 100%;
}
.tails{
    background: url("http://davealger.com/apps/coinflip/tails.png");
    background-size: 100% 100%;
    width: 100px;
    height: 100px;
    margin: 4px;
    border-radius: 100%;
}
.flipx{
    -webkit-animation-name: spinx;
    -webkit-animation-duration: 1s;
    -webkit-transform-origin:50% 50%;
    -webkit-animation-iteration-count: infinite;
    -webkit-animation-timing-function: linear;
    
    animation-name: spinx;
    animation-duration: 1s;
    transform-origin:50% 50%;
    animation-iteration-count: infinite;
    animation-timing-function: linear;
}

.flipy{
    -webkit-animation-name: spiny;
    -webkit-animation-duration: 1s;
    -webkit-transform-origin:50% 50%;
    -webkit-animation-iteration-count: infinite;
    -webkit-animation-timing-function: linear;
    
    animation-name: spiny;
    animation-duration: 1s;
    transform-origin:50% 50%;
    animation-iteration-count: infinite;
    animation-timing-function: linear;
}


@-webkit-keyframes spinx {
    0% { -webkit-transform: rotatex(0deg); 
      background: url("http://davealger.com/apps/coinflip/heads.png");
    background-size: 100% 100%;
    width: 100px;
    height: 100px;
    margin: 4px;
    border-radius: 100%;
    }
    25% {
       -webkit-transform: rotatex(180deg); 
    ...

JavaScript

var g = 1;

$(document).ready(function () {
    $("#stop").click( function () {
        $(".coin").each(function () {
            stopCoin($(this));
        });
    });
    
    $("#go").click( function () {
        g = 1;
        $(".coin").each(function () {
            startCoin($(this));
        });
    });
    
    $("#nc").change( function () {
        var cnt = 0;
        if (isNumber($(this).val().trim())) {
            cnt = Math.round($(this).val().trim(),0);
        }
        if (cnt > 100) {
            cnt = 100;
        }
        if (cnt < 1) {
            cnt = 1;
        }
        $(this).val(cnt);
        addCoins(cnt);
        setupHandlers();
    });

    addCoins(10);
    setupHandlers();
    
    setInterval(function () { checkCoins(); }, 250);
    
    $("#go").trigger("click");
});

function addCoins(n) {
    $("#purse").empty();
    while (n--) {
        $("#purse").append('<div class="coin heads"></div>');
    }
}

function isNumber(n) {
  return !isNaN(parseFloat(n)) && isFinite(n);
}

function setupHandlers() {
    $(".coin").click(function (e) {
        if ($(this).hasClass("flip")) {
            stopCoin($(this));
        }
        else {
            startCoinNow($(this));
        }
    });
}

function startCoinNow($c) {
    $c.removeClass("flipx");
    $c.removeClass("flipy");
    $c.removeClass("flip");
    
    if (Math.random() > 0.5) {
        $c.addClass("flipx");
    }
    else {
        $c.addClass("flipy");
    }
    
    $c.addClass("flip");
}

function startCoin($c) {
    $c.removeClass("flipx");
    $c.removeClass("flipy");
    $c.removeClass("flip");
    
    setTimeout(function () {
        if (Math.random() > 0.5) {
            $c.addClass("flipx");
        }
        else {
            $c.addClass("flipy");
        }
        
        $c.addClass("flip");
    }, (g * 97));
    
    g++;
    if (g > 10) { g = 1; }
}

function stopCoin($c) {
    if ($c.hasClass("flip")) {
        $c.removeClass("flipx");
       ...