> 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/fen-xi/analytics.log.md).

# Analytics.log

> 函数式 API `eventLog`也能用它实现相同功能。

### 功能说明

记录应用中发生的事件。可以记录调试·信息·警告·错误·屏幕·曝光·点击等多种类型。在沙盒环境中会输出到控制台，在实际环境中会记录到日志系统。

`params`中用于用户识别 `anonymous_key`会作为默认参数自动包含。若直接传入相同的键，则以传入的值为准。 `undefined` 该值会在发送前移除，其余值都会规范化为 string。

Toss App Android/iOS `5.208.0` 可在以上版本中使用。在不支持的版本中，日志会在没有错误的情况下被静默忽略。

### 类型

```ts
Analytics.log(params: EventLogParams): Promise<void>;
```

**参数**

```ts
type EventLogParams = {
  log_name: string;
  log_type:
    | "debug"
    | "info"
    | "warn"
    | "error"
    | "event"
    | "screen"
    | "impression"
    | "click"
    | "popup";
  params: Record<string, string | number | boolean | null | undefined>;
};
```

**响应**

无。

### 示例代码

#### JavaScript

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

try {
  await Analytics.log({
    log_name: "user_action",
    log_type: "event",
    params: {
      action: "button_click",
      screen: "main",
      userId: 12345,
    },
  });
} catch (error) {
  console.error(error);
}
```


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