> For the complete documentation index, see [llms.txt](https://docs.eueno.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.eueno.io/eueno-libraries/eueno-lib-browser/login.md).

# login()

## Syntax

```javascript
login(account: string)
```

Login to eueno by Owallet account address. After login, the token will be saved in local storage with the name “eueno-token”. **YOU MUST LOG IN BEFORE USING ANY METHOD IN EUENO LIBRARY.**

## Parameters

<table><thead><tr><th width="109">Name</th><th width="121">Type</th><th width="102">Required</th><th>Description</th></tr></thead><tbody><tr><td>account</td><td>string</td><td>Yes</td><td>Owallet account address.</td></tr></tbody></table>

## Example

{% code lineNumbers="true" %}

```javascript
import { login} from "@eueno/lib-browser";

const onLogin = async () => {
   try {
     const account = "0xf069fF728e9fc85D81163269F3b04Ef5CF387f15";
     const response = await login(account);
     console.log("LOGIN", response);
   } catch (error) {
     console.log(error);
   }
 };

```

{% endcode %}

Response of example:

```json
 "data": {
        "account": "0xf069ff728e9fc85d81163269f3b04ef5cf387f15",
        "memo": "3506489706676224",
        "balance": 0,
        "token": "eyJhbG…8GMCQ",
        "create_at": "2022-12-26T03:16:26.903Z"
    }

```


---

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