f3bdaa4e88
- 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.
26 lines
907 B
Markdown
26 lines
907 B
Markdown
# 练习 6：冒泡、委托和 stopPropagation
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## 目标
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理解事件会冒泡，并学会在列表里使用事件委托。
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## 你要练什么
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- 事件冒泡
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- `event.target`
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- 事件委托
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- `stopPropagation()`
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## 任务
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- 点击外层面板时输出一条日志
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- 点击列表项时，通过事件委托切换激活状态
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- 点击列表项里的删除按钮时，阻止冒泡并删除当前项
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## 文件
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- [starter.html](/Users/lijiaqing/home/wwwroot/front-end-example/04-dom-events-async/06-bubbling-and-delegation/starter.html)
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- [starter.js](/Users/lijiaqing/home/wwwroot/front-end-example/04-dom-events-async/06-bubbling-and-delegation/starter.js)
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- [answer.html](/Users/lijiaqing/home/wwwroot/front-end-example/04-dom-events-async/06-bubbling-and-delegation/answer.html)
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- [answer.js](/Users/lijiaqing/home/wwwroot/front-end-example/04-dom-events-async/06-bubbling-and-delegation/answer.js)
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