CSS | Transform and Transition

by Zoltan Boros

HTML

<button id="button" onclick="toggle();">Toggle</button><br />
<div class="content" id="content">
    Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
</div>

CSS

body {
    background-color: #e9e9e9;
    text-align: center;
}
div.content {
    display: inline-block;
    width: 280px;
    margin: 20px 0 0 0;
    padding: 10px;
    border: 1px solid #BFBFBF;
    background-color: white;
    box-shadow: 10px 10px 5px #aaaaaa;
    visibility: hidden;
    transform: scale(0.01,0.01);
}
div.opened {
    visibility: visible;
    transform: scale(1,1);
    transform-origin: 0 0;
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.320, 1.275);
}
div.destroyed {
    visibility: visible;
    transform: scale(5,5);
    transform-origin: 50% 50%;
    opacity: 0;
    transition: transform 0.5s ease-out, opacity 0.5s ease-out;
}

JavaScript

var button = document.getElementById("button");
var content = document.getElementById("content");
var state = false;
function toggle() {
    state = !state;
    if (state) {
        content.classList.add("opened");
    } else {
        button.disabled = true;
        content.classList.remove("opened");
        content.classList.add("destroyed");
        setTimeout(function() {
            content.classList.remove("destroyed");
            button.disabled = false;
        }, 500);
    }
}