# 2.使用actor查询

在[快速开始](/dfinity/yi-kuai-su-ru-men.md)章节中，已经了解过一个使用了actor对象和异步消息的简单应用。接下来的教程中，会写一个使用基于actor的消息的应用。本篇教程会讲解如何修改Hello，World！应用来定义一个actor并在本地网络部署测试。


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://mixdao.gitbook.io/dfinity/si-.-jiao-cheng/2.-shi-yong-actor-cha-xun.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.