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.
练习 3：数组和函数类型
目标
学会给数组和函数写类型。
你要练什么
number[]- 参数类型
- 返回值类型
任务
- 定义一个数字数组
- 写一个
sum函数 - 让它接收两个数字并返回数字结果