const el = document.querySelector('.element-to-observe');
function observeIntersection() {
const options = {
rootMargin: '0px',
threshold: 0
};
const observer = new IntersectionObserver((entries) => {
entries.forEach((entry) => {
if (entry.isIntersecting) {
console.log('on');
} else {
console.log('off');
}
});
}, options);
observer.observe(el);
}
observeIntersection();
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