JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<body>
<button style="width: 250px; height: 100px;" class="button">
</button>
<p>
<i>Content die weer te geven is bij het klikken van de knop.</i>
</p>

<script>
var toggled = false;
$("button").click(function() {
    if (!toggled) {
        $(this).css( "background", "url(http://i.imgur.com/Q2sj6XQ.png)" );
        toggled = true;
    } else {
        $(this).css("background", "url(http://i.imgur.com/GKVoeGr.png)");
        toggled = false;
    }

    $("p").slideToggle();
})
</script>
</body>

CSS

.button {
    background: url("http://i.imgur.com/GKVoeGr.png") no-repeat 3px 5px;
}