# Web: JavaScript SDK

The JavaScript SDK is a Software Development Kit (SDK) that can be used in a browser environment. This document describes the procedure for integrating the Wepin widget into the WEB using the JavaScript SDK.

## Package List

* ​[sdk ](/en/widget-integration/web-javascript-sdk/widget.md): @wepin/sdk-js
  * It provides functionalities to use the Wepin Widget.
* ​[login ](/en/widget-integration/web-javascript-sdk/widget.md): @wepin/login-js
  * It provides the ability to log in to Wepin using OAuth authentication tokens such as social logins.
* ​[provider ](/en/widget-integration/web-javascript-sdk/provider.md): @wepin/provider-js, @wepin/wagmi-connector
  * It offers solutions that facilitate interaction with blockchains supported by Wepin, such as Ethereum, EVM-compatible chains, and Solana.

{% hint style="danger" %}
All Wepin packages are designed to work only in **Client Side Rendering (CSR)** environments. If you are using Wepin packages in a Server Side Rendering (SSR) environment, you need to configure them so that the packages are loaded only on the client side.

Refer to the following code for implementation:

```javascript
const initWepin = async () => {
    const { WepinSDK } = await import('@wepin/sdk-js');
    const wepinSDK = new WepinSDK({
        appKey: '',
        appId: '',
    });
    await wepinSDK.init({
        defaultLanguage: 'ko',
    });
}
```

{% endhint %}


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