## **<spanstyle="font-size:20px;">Q</span>** How to understand the `index` and `order` of each worksheet?
## **<spanstyle="font-size:20px;">Q</span>** What is the difference between `index` and `order` for each sheet page?
**<spanstyle="font-size:20px;">A</span>**: Each worksheet has a unique id, which is `index`, which can be incremented by numbers or a random string. And `order` is the order of all worksheets, starting from 0.
**<spanstyle="font-size:20px;">A</span>**: Each sheet page has a unique id, which is `index`, which can be incremented by numbers or a random string. And `order` is the sorting situation of all sheets, starting from 0, can only be numbers `0,1,2...`.
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## **<spanstyle="font-size:20px;">Q</span>** Why can’t I run the project directly under the dist folder?
**<spanstyle="font-size:20px;">A</span>**: Need to start the local server
- [Node build a local server](https://github.com/JacksonTian/anywhere)
- [Python build local server](https://developer.mozilla.org/en-US/docs/Learn/Common_questions/set_up_a_local_testing_server)
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## **<spanstyle="font-size:20px;">Q</span>** How to import and export excel?
**<spanstyle="font-size:20px;">A</span>**: You can refer to the following cases at this stage