> For the complete documentation index, see [llms.txt](https://developers-apps-in-toss.toss.im/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers-apps-in-toss.toss.im/documentation/api-and-sdk-zh/sdk/domains-api/huan-jing/environment.deviceid.md).

# Environment.deviceId

> 函数式 API `getDeviceId`也能用它实现相同功能。

### 功能说明

这是您正在使用的设备的唯一标识符。可用于按设备保存设置、分析日志、区分同一用户的多台设备。

这是常量值，无需调用即可直接读取。

### 类型

```ts
Environment.deviceId: string;
```

**参数**

无

**响应**

是字符串。

### 示例代码

```js
import { Environment } from "@apps-in-toss/web-framework";

console.log(Environment.deviceId);
```


---

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