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Rule priority, scope & exceptions
Use this to align rules with the senior-level structure (P0/P1/P2, scope, exceptions/tradeoffs).
frontend ruleP1universalStack: javascript
performanceintersection-observerscrollevents
Prefer IntersectionObserver over scroll listeners for visibility
Detect element visibility/sticky behavior with IntersectionObserver instead of scroll handlers that require throttling/debouncing and are more resource intensive.
PR: frontpage-web · org-mining-hist-2026-06Created: Jun 18, 2026
Bad example
Old codetypescript
| 1 | window.addEventListener('scroll', throttle(() => checkSticky(), 100)); |
Explanation (EN)
Objašnjenje (HR)
Good example
New codetypescript
| 1 | const io = new IntersectionObserver(([e]) => setSticky(!e.isIntersecting)); |
| 2 | io.observe(sentinel); |
Explanation (EN)
Objašnjenje (HR)