Inserting oj css at runtime only works the first time

描述

貢獻者指南

技術棧

javascripthtmlcss

領域

frontend

議題類型

bug

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。

mostly clear

前置要求

JavaScript basicsDOM manipulationCaching patterns

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。

45

研究方向

Investigate the codebase, likely in the main oj source file (e.g., oj.js), to find where CSS strings are inserted into the DOM at runtime. Currently, inserting CSS only works the first time because there is no mechanism to track and update previously inserted CSS. The fix should implement a global cache (e.g., a Map) that stores references to style elements or CSS rules, and on subsequent calls, remove or update the previous insertion. This will require understanding the current insertion method and ensuring the cache is properly cleared when overriding CSS changes.