CyCraft/pepicons

perf: improve header performance by hiding when not in view (Intersection Observer API)

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#67 建立於 2021年5月13日

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描述

improve header performance by hiding when not in view (Intersection Observer API)

貢獻者指南

技術棧
typescriptjavascripthtmlcss
領域
frontendperformance
議題類型
performance
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-3 hours
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
Intersection Observer APITypeScriptCSS
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
70
研究方向
This task involves implementing the Intersection Observer API to hide the header when it is not in the viewport. Start by locating the header component (likely in src/components/Header.tsx or similar). Add an effect that creates an IntersectionObserver to observe the header element. When the intersection ratio is 0, add a CSS class to hide the header (e.g., display: none). Ensure the header reappears when it becomes visible again. Test the behavior on scroll. Consider performance implications and ensure no layout shift.
perf: improve header performance by hiding when not in view (Intersection Observer API) · CyCraft/pepicons#67 | Good First Issue