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iobs.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.card-container {
display: flex;
flex-direction: column;
gap: 1rem;
align-items: flex-start;
}
.card {
background-color: forestgreen;
border: 1px solid firebrick;
border-radius: .25em;
padding: 10px;
transform: translateX(100px);
opacity: 0;
transition: 150ms;
}
.show {
transform: translateX(0);
opacity: 1;
}
</style>
</head>
<body>
<div class="card-container">
<div class="card">This is the first card</div>
<div class="card">This is card</div>
<div class="card">This is card</div>
<div class="card">This is card</div>
<div class="card">This is card</div>
<div class="card">This is card</div>
<div class="card">This is card</div>
<div class="card">This is card</div>
<div class="card">This is card</div>
<div class="card">This is card</div>
<div class="card">This is card</div>
<div class="card">This is card</div>
<div class="card">This is card</div>
<div class="card">This is card</div>
<div class="card">This is card</div>
<div class="card">This is card</div>
<div class="card">This is card</div>
<div class="card">This is the LAST CARD!!!!</div>
</div>
<script>
const cards = document.querySelectorAll('.card');
const observer = new IntersectionObserver( entries => {
entries.forEach(entry => {
entry.target.classList.toggle('show', entry.isIntersecting);
if(entry.isIntersecting) observer.unobserve(entry.target);
});
}, {
threshold: .5
});
cards.forEach(card => {
observer.observe(card);
})
</script>
</body>
</html>