zloirock/core-js

requestAnimationFrame polyfill

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#1,523 创建于 2026年3月16日

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 (1 评论) (0 反应) (0 负责人)JavaScript (23,771 star) (1,609 fork)batch import
enhancementhelp wantedweb standards

描述

Is there plans to support requestAnimationFrame?

The polyfill plans, if planned I propose to be as follows---

  • Ancient webkit and firefox: redirect to mozRAF, webkitRAF (RAF is abbreviated) / mozCAF, webkit CRAF, etc.
  • Older broswers / node: Store a list of callbacks, pump them every 16ms (so all usages of RAF animates at the same time)

贡献者指南

技术栈
javascript
领域
frontendperformance
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
fresh
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
basic JavaScriptunderstanding of requestAnimationFrame
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
70
研究方向
The issue proposes a requestAnimationFrame polyfill with a clear implementation plan for ancient WebKit/Firefox and older browsers/Node. However, there is no maintainer response yet. Check the repository's contribution guidelines and any existing discussion in related issues or PRs. Look at core js's existing polyfill patterns (e.g., for other timer functions) to ensure consistency. The file likely to be modified is `modules/web.timers.js` or a new module. Verify if the maintainer is open to adding this polyfill by reviewing comments or asking in the issue.