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acb14455758bdd48f901c9d564e8741acc4b9913
front-end-example/04-dom-events-async/02-text-class-style/README.md
charlie f3bdaa4e88 feat: add TypeScript lessons and learning panel 
- Introduced a new script to check TypeScript lesson files for errors.
- Created a main TypeScript file to render lessons and their details.
- Added lesson definitions with starter and answer codes.
- Implemented a user interface for navigating and running lessons.
- Styled the application with CSS for a better user experience.
- Updated README to reflect the new TypeScript section and usage instructions.
2026-03-19 10:06:11 +08:00

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练习 2：修改文本、类名和样式

目标

学会改元素内容、切换类名和设置简单样式。

你要练什么

  • textContent
  • classList.add
  • classList.remove
  • style

任务

  • 把标题改成“今天已完成 DOM 练习”
  • 给状态标签加上完成样式
  • 修改说明文字颜色

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