# 4.2.5 命名空间到房间 namespace\_to\_room

* `room` (String)
* **Returns** `Namespace` 用于连接

为后续事件设置一个修饰符，该事件将仅广播给已加入指定的`room`客户端。

要emit到多个房间，可以多次调用。

```javascript
const io = require('socket.io')();
const adminNamespace=io.of('/admin');

adminNamespace.to('level1').emit('an event',{some:"data"});
```


---

# 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://socket.gitbook.io/docs/4-fu-wu-duan-apiserverapi/4.2-ming-ming-kong-jian-namespace/namespace_to_room.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.