DOMNodeInserted

dom-insert-counter.js

(function($) { $(function() {
    // All the nyans.
    var nyan = $('.nyan');
    var nyanImg = '<img width="40px" src="http://i1.kym-cdn.com/photos/images/original/000/117/424/tumblr_ljwaimhJcK1qa4ebfo1_500.gif" />';
    var mouseStillDown = false;
    var firstMouseDown = false;
    var insertingNyan = false;
    var button = $('.button');

    // Make the timings editable.
    window.nyan = {
        firstDelay: 600,
        delay: 200
    };

    var nyanInsert = function() {
        insertingNyan = true;
        if (mouseStillDown && insertingNyan) {
            nyan.append(nyanImg);
            setTimeout(nyanInsert, (firstMouseDown) ? window.nyan.firstDelay : window.nyan.delay);
        }
        insertingNyan = firstMouseDown = false;
    };

    button.mousedown(function(e) {
        mouseStillDown = firstMouseDown = true;
        nyanInsert();
    });
    button.mouseup(function(e) {
        mouseStillDown = false;
    });

    // The counter script.
    var insertCount = 0;
    var counter = $('.counter');
    document.addEventListener('DOMNodeInserted', function(e) {
        // Only increment if the node being inserted into isn't the counter.
        if (e.relatedNode.id !== 'dom-insert-counter') {
            insertCount++;
            counter.text(insertCount);
        }
    }, false);
}); })(jQuery);

index.css

body {
    background-color: #B9B79E;
    color: #2C241D;
    font-family: "PT Sans", Arial;
    font-size: 12px;
    font-weight: normal;
}
code {
    background-color: #EDEDE7;
    color: #2C241D;
    padding: 0 0.5em;
}
a {
    color: inherit;
    cursor: pointer;
    text-decoration: inherit;
}
.title, .subtitle, .button {
    font-family: "Arvo";
    text-align: center;
}
.counter {
    font-size: 24px;
    margin-bottom: 10px;
    text-align: center;
}
.left {
    float: left;
    margin-left: 5%;
}
.right {
    float: right;
    margin-right: 5%;
}
.button {
    cursor: pointer;
    font-size: 16px;
    line-height: 16px;
    margin: 0 auto 30px;
}
.side-by-side {
    margin: 0 auto;
    position: relative;
    text-align: center;
}
.info {
    color: #2C241D;
}
.clearfix:after {
    content: ".";
    display: block;
    clear: both;
    visibility: hidden;
    line-height: 0;
    height: 0;
}
.clearfix {
    display: inline-block;
}
.button {
    background-color: #EDEDE7;
    border: 1px solid #593723;
    -moz-box-shadow: 0 10px 0 0 #593723, 0 10px 15px 2px rgba(0, 0, 0, 0.8);
    -webkit-box-shadow: 0 10px 0 0 #593723, 0 10px 15px 2px rgba(0, 0, 0, 0.8);
    box-shadow: 0 10px 0 0 #593723, 0 10px 15px 2px rgba(0, 0, 0, 0.8);
    color: #593723;
    display: block;
    padding: 10px;
    position: relative;
    top: 0;
    text-decoration: none;
    width: 120px;
}
.button:hover, .button:focus {
    -moz-box-shadow: 0 2px 0 0 #593723, 0 2px 2px 1px rgba(0, 0, 0, 0.8);
    -webkit-box-shadow: 0 2px 0 0 #593723, 0 2px 2px 1px rgba(0, 0, 0, 0.8);
    box-shadow: 0 2px 0 0 #593723, 0 2px 2px 1px rgba(0, 0, 0, 0.8);
    top: 8px;
}
.button:active {
    -moz-box-shadow: inset 0 2px 2px 1px #593723, 0 0 0 0 rgba(0, 0, 0, 0.1);
    -webkit-box-shadow: inset 0 2px 2px 1px #593723, 0 0 0 0 rgba(0, 0, 0, 0.1);
    box-shadow: inset 0 2px 2px 1px #593723, 0 0 0 0 rgba(0, 0, 0, 0.1);
    top: 10px;
}
.button:before {
    content: '';
    background-color: transparent;
    display: block;
    position: absolute;
    bottom: 100%;
    left: 0;
    height: 0;
    width: 100%;
}
.button:hover:before, .button:focus:before, .button:active:before {
    border: 1px solid transparent;
    left: -1px;
}
.button:hover:before, .button:focus:before {
    height: 8px;
}
.button:active:before {
    height: 10px;
}
.animated {
    -webkit-transition: all .1s ease;
    -moz-transition: all .1s ease;
    -ms-transition: all .1s ease;
    -o-transition: all .1s ease;
    transition: all .1s ease;
}
.animated:active {
    -webkit-transition: all 0s ease;
    -moz-transition: all 0s ease;
    -ms-transition: all 0s ease;
    -o-transition: all 0s ease;
    transition: all 0s ease;
}

index.html

<html>
<head>
    <title>DOM Insert Counter</title>
    <link href="http://fonts.googleapis.com/css?family=Arvo" rel="stylesheet" type="text/css">
    <link href="http://fonts.googleapis.com/css?family=PT+Sans" rel="stylesheet" type="text/css">
    <link rel="stylesheet" type="text/css" href="index.css">
    <script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
    <script type="text/javascript" src="dom-insert-counter.js"></script>
</head>
<body>
    <h1 class="title">DOM Insert Counter</h1>
    <h2 class="subtitle">A script that counts <code>DOMNodeInserted</code> events being fired.</h2>
    <p class="subtitle">(apart from the counter updating)</p>
    <div class="counter" id="dom-insert-counter">0</div>
    <a class="button animated">NYAN</a>
    <div class="nyan"></div>
</body>