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[Intersection Observer - After scroll to block - do something] Intersection Observer - After scroll to block - do something
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| const observer = new IntersectionObserver(handleIntersection, { threshold: 0 }); | |
| function handleIntersection(entries, observer) { | |
| entries.forEach(entry => { | |
| if (entry.isIntersecting) { | |
| entry.target.style.backgroundColor = "#e74c3c"; | |
| } else { | |
| entry.target.style.backgroundColor = "#3498db"; | |
| } | |
| }); | |
| } | |
| const wrappers = document.querySelectorAll(".wrapper"); | |
| wrappers.forEach((entry) => { observer.observe(entry) }); |
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