我如何获得建议？
How do I get a suggestions?
是否可以在为用户创建的函数输入 google 脚本时弹出建议？类似于内置函数：SpreadsheetApp。 -->getActiveSheet() 但要让我的 functionName() 查看 return 值的参数和类型？
是的。
如果您指的是 Google 脚本环境中的自定义函数，那么是的，您只需要用您的函数创建一个库。这是 link with instructions to create your own library. From the Libraries documentation：
You can use your included library just as you would use a default service. For instance, if you have chosen Test as an identifier for your library, just type Test immediately followed by a period to see autocomplete information listing the methods of the library.
顺便说一句，查看自动完成的快捷方式是Ctrl+Space。
如果您指的是 Google 表格中的自定义函数，那么可以。您只需按照以下指南添加评论即可。来自自动完成 documentation:
Google Sheets supports autocomplete for custom functions much like for built-in functions. As you type a function name in a cell, you will see a list of built-in and custom functions that matches what you enter.
Custom functions will appear in this list if their script includes a JsDoc @customfunction tag, as in the DOUBLE() example below.
是否可以在为用户创建的函数输入 google 脚本时弹出建议？类似于内置函数：SpreadsheetApp。 -->getActiveSheet() 但要让我的 functionName() 查看 return 值的参数和类型？
是的。
如果您指的是 Google 脚本环境中的自定义函数，那么是的，您只需要用您的函数创建一个库。这是 link with instructions to create your own library. From the Libraries documentation：
You can use your included library just as you would use a default service. For instance, if you have chosen Test as an identifier for your library, just type Test immediately followed by a period to see autocomplete information listing the methods of the library.
顺便说一句，查看自动完成的快捷方式是Ctrl+Space。
如果您指的是 Google 表格中的自定义函数，那么可以。您只需按照以下指南添加评论即可。来自自动完成 documentation:
Google Sheets supports autocomplete for custom functions much like for built-in functions. As you type a function name in a cell, you will see a list of built-in and custom functions that matches what you enter.
Custom functions will appear in this list if their script includes a JsDoc @customfunction tag, as in the DOUBLE() example below.