Created
June 11, 2023 06:43
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| <html> | |
| <head> | |
| <title>Intersection Observer API</title> | |
| </head> | |
| <body> | |
| <main> | |
| <div class="observed"> | |
| </div> | |
| </main> | |
| </body> | |
| </html> |
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| let handler = () => {} | |
| // WARN use this API cautiously, lots of observers take up memory and polling is expensive | |
| let observer = new IntersectionObserver(handler, { | |
| root: document.querySelector('.observed'), | |
| rootMargin: '3vw', | |
| threshold: 1.0 | |
| }) |
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