making a resizable div effect in vanilla js
scroll image compare
<!DOCTYPE html>
<html lang="zh-Hans">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<meta name="author" content="xgqfrms">
<meta name="generator" content="VS code">
<title>scroll image compare</title>
<style>
* {
box-sizing: border-box;
margin: 0;
padding: 0;
}
.home-sec {
padding-top: 64px;
padding-bottom: 80px;
}
.before-after {
background: #283593;
}
.home-col {
100%;
max- 1024px;
padding-left: 32px;
padding-right: 32px;
margin-left: auto;
margin-right: auto;
box-sizing: border-box;
}
.home-sec h2 {
text-align: center;
}
.before-after .container {
100%;
border-radius: 4px;
overflow: hidden;
position: relative;
cursor: col-resize;
box-shadow: 0 12px 24px 0;
rgba(0,0,0,.18);
min-height: 300px;
}
.before-after .before {
position: absolute;
height: 100%;
top: 0;
left: 0;
overflow: hidden;
border-right: 4px solid #00a2eb;
box-sizing: border-box;
}
.before-after .before img {
display: flex;
height: 100%;
}
</style>
</head>
<body>
<header>
<h1>scroll image compare</h1>
</header>
<main class="before-after home-sec">
<article class="home-col">
<h2 style="color: white;">Before & After</h2>
<section class="before-after">
<div class="container">
<!-- <div class="before" style=" 972.5px;"> -->
<div class="before" style=" 484.5px;">
<img srcset="https://cdn.xgqfrms.xyz/css-effects-all-in-one/images/before.png">
</div>
<img srcset="https://cdn.xgqfrms.xyz/css-effects-all-in-one/images/after.png" class="after">
<!-- <div class="before" style=" 484.5px;">
<img src="https://www.fika.io/img/origin.290c77e9.png" srcset="https://cdn.xgqfrms.xyz/css-effects-all-in-one/images/before.png">
</div>
<img src="https://www.fika.io/img/latte.f6f60fee.png" srcset="https://cdn.xgqfrms.xyz/css-effects-all-in-one/images/after.png" class="after"> -->
</div>
</section>
<div>
<a href="https://www.fika.io/">https://www.fika.io/</a>
</div>
</article>
</main>
<footer>
<p>copyright© xgqfrms 2020</p>
</footer>
<!-- js -->
<script>
const log = console.log;
// const div = document.querySelector(`[class="before"]`);
const div = document.querySelector(`div.before`);
const box = document.querySelector(`div.container`);
// log(`box`, box)
// box.addEventListener(`mousedown`, (e) => {
// log(`mousedown`, e);
// });
box.addEventListener(`mousemove`, (e) => {
// log(`mousemove`, e);
const {
offsetX,
offsetY,
} = e;
// log(`offsetX`, offsetX);
// div.style.width = offsetX;
div.style.width = offsetX + `px`;
});
// box.addEventListener(`scroll`, (e) => {
// log(`scroll`, e);
// });
// box.addEventListener(`move`, (e) => {
// log(`move`, e);
// });
</script>
</body>
</html>
refs
https://codepen.io/xgqfrms/pen/wvMQqZL
https://developer.mozilla.org/en-US/docs/Web/API/Element/mousemove_event
https://medium.com/the-z/making-a-resizable-div-in-js-is-not-easy-as-you-think-bda19a1bc53d
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