> 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/sdk/domains-api/analytics/analytics.log.md).

# Analytics.log

> 함수형 API `eventLog`로도 같은 기능을 쓸 수 있어요.

### 기능 설명

앱에서 발생하는 이벤트를 기록해요. 디버깅·정보·경고·오류·화면·노출·클릭 등 다양한 유형을 남길 수 있어요. 샌드박스 환경에서는 콘솔에 출력되고, 실환경에서는 로그 시스템에 기록돼요.

`params`에는 사용자 식별용 `anonymous_key`가 기본 파라미터로 자동 포함돼요. 같은 키를 직접 전달하면 전달한 값이 우선해요. `undefined` 값은 전송 전에 제거되고, 나머지 값은 모두 string으로 정규화돼요.

토스앱 Android/iOS `5.208.0` 이상에서 사용할 수 있어요. 미지원 버전에서는 에러 없이 로그가 조용히 무시돼요.

### 타입

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

**Params**

```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>;
};
```

**Response**

없음.

### 예시 코드

#### 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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