3435848495
- Implement dynamic styles and event handling in Vue2 with a card component. - Create lifecycle methods exercise to simulate async data loading and instance destruction. - Develop a component communication exercise with props, events, and slots. - Build a comprehensive course management dashboard with filtering, statistics, and component interactions.
28 lines
830 B
Markdown
28 lines
830 B
Markdown
# 练习 5：computed 和 watch
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## 目标
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学会区分“根据已有数据推导结果”和“监听变化做额外动作”。
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## 你要练什么
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- `computed`
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- `watch`
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- 数据推导
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- 监听输入变化
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## 任务
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请基于页面结构完成以下操作：
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- 根据关键字过滤课程列表
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- 用 `computed` 计算过滤结果数量
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- 用 `watch` 在关键字变化时输出日志
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## 文件
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- [starter.html](/Users/lijiaqing/home/wwwroot/front-end-example/07-vue2/05-computed-and-watch/starter.html)
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- [starter.js](/Users/lijiaqing/home/wwwroot/front-end-example/07-vue2/05-computed-and-watch/starter.js)
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- [answer.html](/Users/lijiaqing/home/wwwroot/front-end-example/07-vue2/05-computed-and-watch/answer.html)
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- [answer.js](/Users/lijiaqing/home/wwwroot/front-end-example/07-vue2/05-computed-and-watch/answer.js)
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