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test.html
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test.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>
</head>
<body>
<div class="home" style="height: 100vh;"></div>
<span class="counter">100</span>
<script src="jquery-3.5.1.js"></script>
<div class="home" style="height: 100vh;"></div>
<script>
// Membuat instance Intersection Observer
const observer = new IntersectionObserver((entries, observer) => {
entries.forEach((entry) => {
// Cek jika elemen .counter masuk ke dalam viewport
if (entry.isIntersecting) {
// Menganimasikan counter
setTimeout( function(){
$({ Counter: 0 }).animate({
Counter: $('.counter').text()}, {
duration: 4000,
easing: 'swing',
step: function() {
$('.counter').text(Math.ceil(this.Counter));
}
});
}, 100);
// Berhenti memantau elemen
observer.unobserve(entry.target);
}
});
});
// Menambahkan elemen yang akan dipantau
const elementToObserve = document.querySelector('.counter');
observer.observe(elementToObserve);
</script>
</body>
</html>