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script.js
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script.js
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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: 1,
});
const lastCardObserver = new IntersectionObserver((entries) => {
console.log("reach last child");
const lastCard = entries[0];
if (!lastCard.isIntersecting) return;
loadNewCards();
lastCardObserver.unobserve(lastCard.target);
lastCardObserver.observe(document.querySelector('.card:last-child'));
}, {});
lastCardObserver.observe(document.querySelector('.card:last-child'));
cards.forEach(card => {
observer.observe(card)
});
function* generateId() {
let i = 1;
while (true) {
yield i++;
}
};
const getId = generateId();
const cardContainer = document.querySelector('.card-container');
function loadNewCards() {
const card = document.createElement('card');
card.textContent = `New Card ${getId.next().value}`
card.classList.add('card');
observer.observe(card);
cardContainer.appendChild(card)
}