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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<meta name="description" content="A small Web Component shows a before-after comparison.">
<meta name="keywords" content="9am,web component,custom element,before,after,before-after,slide,comparison">
<link rel="icon" href="./logo.svg" type="image/svg+xml">
<title><before-after></title>
<style>
body {
box-sizing: border-box;
display: grid;
gap: 2em;
padding: 2em;
margin: 0 auto;
width: min(960px, 100%);
text-align: center;
background: whitesmoke;
}
section {
padding: 2em;
}
before-after:not(:defined) [slot=after]{
display: none;
}
[slot=before] {
background: rgba(0 0 0 / .05);
border: 4px solid white;
}
[slot=after] {
background: rgba(0 0 0 / .7);
border: 4px solid black;
-webkit-text-stroke: 1px white;
text-shadow: 1px 1px 5px black;
color: white;
}
@property --val {
syntax: "<number>";
inherits: true;
initial-value: 0;
}
before-after.animated {
animation: 4s ease-in-out 1s infinite alternate after;
}
@keyframes before {
from {
--val: 100;
}
to {
--val: 0;
}
}
@keyframes after {
from {
--val: 0;
}
to {
--val: 100;
}
}
before-after.toggle {
animation: .5s ease normal both before;
animation-composition: add;
}
before-after.toggle:has( + input:checked) {
animation: .5s ease normal both after;
}
</style>
</head>
<body>
<a href="//github.com/9am/before-after"><img src="./logo.svg" alt="before-after-logo" title="before-after-logo" width="140px" height="140px" /></a>
<h1><code><before-after></code></h1>
<!-- basic start -->
<before-after>
<section slot="before">
<h2>BEFORE</h2>
<p>This demo shows what <before-after> can do. Drag the thumb bar to see the difference.</p>
</section>
<section slot="after">
<h2>AFTER</h2>
<p>This demo shows what <before-after> can do. Drag the thumb bar to see the difference.</p>
</section>
</before-after>
<before-after varient="radial" style="--position: circle at 30% 40%" value="25">
<section slot="before">
<h2>BEFORE</h2>
<p>A radial varient with position description.</p>
<pre><before-after varient="radial" style="--position: circle at 30% 40%" value="25"></pre>
</section>
<section slot="after">
<h2>AFTER</h2>
<p>A radial varient with position description.</p>
<pre><before-after varient="radial" style="--position: circle at 30% 40%" value="25"></pre>
</section>
</before-after>
<before-after varient="conic" style="--position: from 0.2turn at 30% 40%" value="25">
<section slot="before">
<h2>BEFORE</h2>
<p>A conic varient with position description.</p>
<pre><before-after varient="conic" style="--position: from 0.2turn at 30% 40%" value="25"></pre>
</section>
<section slot="after">
<h2>AFTER</h2>
<p>A conic varient with position description.</p>
<pre><before-after varient="conic" style="--position: from 0.2turn at 30% 40%" value="25"></pre>
</section>
</before-after>
<!-- basic end -->
<!-- repeating start -->
<before-after varient="repeating-linear">
<section slot="before">
<h2>BEFORE</h2>
<p>A repeating-linear varient.</p>
<pre><before-after varient="repeating-linear"></pre>
</section>
<section slot="after">
<h2>AFTER</h2>
<p>A repeating-linear varient.</p>
<pre><before-after varient="repeating-linear"></pre>
</section>
</before-after>
<before-after varient="repeating-radial">
<section slot="before">
<h2>BEFORE</h2>
<p>A repeating-radial varient.</p>
<pre><before-after varient="repeating-radial"></pre>
</section>
<section slot="after">
<h2>AFTER</h2>
<p>A repeating-radial varient.</p>
<pre><before-after varient="repeating-radial"></pre>
</section>
</before-after>
<before-after varient="repeating-conic" style="--repeat: 8">
<section slot="before">
<h2>BEFORE</h2>
<p>A repeating-conic varient.</p>
<pre><before-after varient="repeating-conic"></pre>
</section>
<section slot="after">
<h2>AFTER</h2>
<p>A repeating-conic varient.</p>
<pre><before-after varient="repeating-conic"></pre>
</section>
</before-after>
<!-- repeating end -->
<!-- orient start -->
<before-after orient="vertical" value="57">
<section slot="before">
<h2>BEFORE</h2>
<p>A vertical version of linear varient.</p>
<pre><before-after orient="vertical" value="57"></pre>
</section>
<section slot="after">
<h2>AFTER</h2>
<p>A vertical version of linear varient.</p>
<pre><before-after orient="vertical" value="57"></pre>
</section>
</before-after>
<before-after varient="radial" orient="vertical">
<section slot="before">
<h2>BEFORE</h2>
<p>A vertical version of radial varient.</p>
<pre><before-after varient="radial" orient="vertical"></pre>
</section>
<section slot="after">
<h2>AFTER</h2>
<p>A vertical version of radial varient.</p>
<pre><before-after varient="radial" orient="vertical"></pre>
</section>
</before-after>
<before-after varient="conic" orient="vertical" value="30">
<section slot="before">
<h2>BEFORE</h2>
<p>A vertical version of conic varient.</p>
<pre><before-after varient="conic" orient="vertical" value="30"></pre>
</section>
<section slot="after">
<h2>AFTER</h2>
<p>A vertical version of conic varient.</p>
<pre><before-after varient="conic" orient="vertical" value="30"></pre>
</section>
</before-after>
<!-- orient end -->
<!-- others start -->
<before-after class="animated" varient="radial" value="0" style="--position: at center">
<section slot="before">
<h2>BEFORE</h2>
<p>This demo shows how to make a animated version.</p>
</section>
<section slot="after">
<h2>AFTER</h2>
<p>This demo shows how to make a animated version.</p>
</section>
</before-after>
<fieldset>
<legend>Toggle</legend>
<before-after class="toggle" varient="repeating-linear" value="0" style="--position: 45deg; --repeat: 10">
<section slot="before">
<h2>BEFORE</h2>
<p>This demo shows how to toggle before-after.</p>
<p>Click the checkbox below to see the difference.</p>
</section>
<section slot="after">
<h2>AFTER</h2>
<p>This demo shows how to toggle before-after.</p>
<p>Click the checkbox below to see the difference.</p>
</section>
</before-after>
<input type="checkbox" />
</fieldset>
<fieldset>
<legend>Controlled</legend>
<before-after class="controlled" varient="repeating-conic" style="--position: from 45deg at 30% 40%; --repeat: 20">
<section slot="before">
<h2>BEFORE</h2>
<p>This demo shows how to make it controlled by a outside <input>.</p>
<p>Drag the slider below to see the difference.</p>
</section>
<section slot="after">
<h2>AFTER</h2>
<p>This demo shows how to make it controlled by a outside <input>.</p>
<p>Drag the slider below to see the difference.</p>
</section>
</before-after>
<input type="range" step="any" />
</fieldset>
<!-- others end -->
<footer>
<pre>Made by <a href="/">@9am</a></pre>
</footer>
<a href="//github.com/9am/before-after" class="github-corner" aria-label="View source on GitHub">
<svg width="80" height="80" viewBox="0 0 250 250" style="fill:#151513; color:#fff; position: absolute; top: 0; border: 0; left: 0; transform: scale(-1, 1);" aria-hidden="true">
<path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path>
<path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path>
<path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path>
</svg>
</a>
<style>.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}</style>
<script type="module">
const ba = document.querySelector('before-after.controlled');
document.querySelector('input[type=range]').addEventListener('input', (evt) => {
ba.value = evt.target.value;
});;
</script>
<!--
<script type="module" src="./src/index.js"></script>
-->
<script src="//unpkg.com/@9am/before-after/dist/index.min.js"></script>
</body>
</html>