JavaScript preprocessors can help make authoring JavaScript easier and more convenient. For instance, CoffeeScript can help prevent easy-to-make mistakes and offer a cleaner syntax and Babel can bring ECMAScript 6 features to browsers that only support ECMAScript 5.
Any URL's added here will be added as <script>
s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.
You can apply a script from anywhere on the web to your Pen. Just put a URL to it here and we'll add it, in the order you have them, before the JavaScript in the Pen itself.
If the script you link to has the file extension of a preprocessor, we'll attempt to process it before applying.
You can also link to another Pen here, and we'll pull the JavaScript from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.
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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.
.content
canvas.snow#snow
.main-text
h1 Aw jeez.
br
| That page has gone missing.
a.home-link(href='#') Hitch a ride back home.
.ground
.mound
.mound_text 404
.mound_spade
$col-sky-top: #bbcfe1;
$col-sky-bottom: #e8f2f6;
$col-fg: #5d7399;
$col-blood: #dd4040;
$col-ground: #f6f9fa;
@mixin trees($direction, $size) {
$shadow: ();
@for $i from 1 through 16 {
$space: $size * 1.2;
$rand: (random(20)/10 - 1) * 50px;
$shadow: append($shadow, ($direction * $i * $space + $rand) (($direction * -$i * $space) + $rand) 15px lighten($col-fg, random(20) + 10%), comma);
}
box-shadow: $shadow;
}
html,
body {
height: 100%;
min-height: 450px;
font-family: 'Dosis', sans-serif;
font-size: 32px;
font-weight: 500;
color: $col-fg;
}
.content {
height: 100%;
position: relative;
z-index: 1;
background-color: mix($col-sky-top, $col-sky-bottom);
background-image: linear-gradient(to bottom, $col-sky-top 0%, $col-sky-bottom 80%);
overflow: hidden;
}
.snow {
position: absolute;
top: 0;
left: 0;
pointer-events: none;
z-index: 20;
}
.main-text {
padding: 20vh 20px 0 20px;
text-align: center;
line-height: 2em;
font-size: 5vh;
}
.home-link {
font-size: 0.6em;
font-weight: 400;
color: inherit;
text-decoration: none;
opacity: 0.6;
border-bottom: 1px dashed transparentize($col-fg, 0.5);
&:hover {
opacity: 1;
}
}
.ground {
height: 160px;
width: 100%;
position: absolute;
bottom: 0;
left: 0;
background: $col-ground;
box-shadow: 0 0 10px 10px $col-ground;
$treeSize: 250px;
&:before,
&:after {
// Trees
content: '';
display: block;
width: $treeSize;
height: $treeSize;
position: absolute;
top: -$treeSize/4;
z-index: -1;
background: transparent;
transform: scaleX(0.2) rotate(45deg);
}
&:after {
left: 50%;
margin-left: -$treeSize / 1.5;
@include trees(-1, $treeSize);
}
&:before {
right: 50%;
margin-right: -$treeSize / 1.5;
@include trees(1, $treeSize);
}
}
.mound {
margin-top: -80px;
font-weight: 800;
font-size: 180px;
text-align: center;
color: $col-blood;
pointer-events: none;
$from-top: 50px;
&:before {
$w: 600px;
$h: 200px;
content: '';
display: block;
width: $w;
height: $h;
position: absolute;
left: 50%;
margin-left: -$w/2;
top: $from-top;
z-index: 1;
border-radius: 100%;
background-color: $col-sky-bottom;
background-image: linear-gradient(to bottom, lighten($col-sky-top, 10%), $col-ground 60px);
}
&:after {
// Blood
$w: 28px;
$h: 6px;
content: '';
display: block;
width: $w;
height: $h;
position: absolute;
left: 50%;
margin-left: - 150px;
top: $from-top + 18px;
z-index: 2;
background: $col-blood;
border-radius: 100%;
transform: rotate(-15deg);
box-shadow: -($w * 2) ($h * 2) 0 1px $col-blood, -($w * 4.5) ($h) 0 2px $col-blood, -($w * 7) ($h * 4) 0 3px $col-blood,
}
}
.mound_text {
transform: rotate(6deg);
}
.mound_spade {
$handle-height: 30px;
display: block;
width: 35px;
height: 30px;
position: absolute;
right: 50%;
top: 42%;
margin-right: -250px;
z-index: 0;
transform: rotate(35deg);
background: $col-blood;
&:before,
&:after {
content: '';
display: block;
position: absolute;
}
&:before {
width: 40%;
height: $handle-height;
bottom: 98%;
left: 50%;
margin-left: -20%;
background: $col-blood;
}
&:after {
width: 100%;
height: 30px;
top: -$handle-height - 25px;
left: 0%;
box-sizing: border-box;
border: 10px solid $col-blood;
border-radius: 4px 4px 20px 20px;
}
}
(function() {
function ready(fn) {
if (document.readyState != 'loading'){
fn();
} else {
document.addEventListener('DOMContentLoaded', fn);
}
}
function makeSnow(el) {
var ctx = el.getContext('2d');
var width = 0;
var height = 0;
var particles = [];
var Particle = function() {
this.x = this.y = this.dx = this.dy = 0;
this.reset();
}
Particle.prototype.reset = function() {
this.y = Math.random() * height;
this.x = Math.random() * width;
this.dx = (Math.random() * 1) - 0.5;
this.dy = (Math.random() * 0.5) + 0.5;
}
function createParticles(count) {
if (count != particles.length) {
particles = [];
for (var i = 0; i < count; i++) {
particles.push(new Particle());
}
}
}
function onResize() {
width = window.innerWidth;
height = window.innerHeight;
el.width = width;
el.height = height;
createParticles((width * height) / 10000);
}
function updateParticles() {
ctx.clearRect(0, 0, width, height);
ctx.fillStyle = '#f6f9fa';
particles.forEach(function(particle) {
particle.y += particle.dy;
particle.x += particle.dx;
if (particle.y > height) {
particle.y = 0;
}
if (particle.x > width) {
particle.reset();
particle.y = 0;
}
ctx.beginPath();
ctx.arc(particle.x, particle.y, 5, 0, Math.PI * 2, false);
ctx.fill();
});
window.requestAnimationFrame(updateParticles);
}
onResize();
updateParticles();
window.addEventListener('resize', onResize);
}
ready(function() {
var canvas = document.getElementById('snow');
makeSnow(canvas);
});
})();
Also see: Tab Triggers