877acb5a8f
- Implemented exercises for array high-order methods, memory and execution, switch statements, and final review. - Added starter and answer files for each exercise to facilitate learning. - Created a runner HTML file to execute JavaScript code and display console outputs. - Updated README files to include exercise objectives, tasks, and usage instructions.
27 lines
657 B
Markdown
27 lines
657 B
Markdown
# 练习 8：常见内置方法
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## 目标
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学会使用几个常见的字符串和数组方法，减少重复代码。
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## 你要练什么
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- `trim()`
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- `toUpperCase()`
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- `includes()`
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- `join()`
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## 任务
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请完成一个“标签清洗器”脚本，要求：
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- 把一段带空格的文本去掉首尾空格
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- 把结果转成大写
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- 判断里面是否包含 `JS`
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- 把一个标签数组拼成一个字符串输出
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## 文件
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- [starter.js](/Users/lijiaqing/home/wwwroot/front-end-example/03-javascript-core/08-built-in-methods/starter.js)
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- [answer.js](/Users/lijiaqing/home/wwwroot/front-end-example/03-javascript-core/08-built-in-methods/answer.js)
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