# MD for: https://www.mercadopago.com.pe/developers/en/docs/sdks-library/client-side/mp-js-v2.md
# SDK JS - ES Module
Version 2 of the client-side SDK has functions based on Promises. In addition, it has a renewed interface for developers and handles errors more efficiently.
Compatible browsers
!\[Compatible navigators\](https://www.mercadopago.com.pe/sdk/mp-jsv2-browsers.png) > WARNING > > Important > > It is important to note that while \*Internet Explorer 11\* is compatible with some \[Checkout API,\](https://www.mercadopago.com.pe/developers/en/docs/checkout-api-payments/overview) flows, the browser is not officially supported by Mercado Pago.
Fraud prevention This version has a functionality that, based on the analysis of the buyer's behavior, identifies if a transaction is fraudulent or suspicious. This analysis is intended to improve the approval of payments. If you wish, you can turn off this feature. Check our \[technical reference\](https://github.com/mercadopago/sdk-js#api).
Installation
To install the frontend SDK, include MercadoPago.js in your application's HTML or install the package on npm according to the code below.
* [bash ](#editor%5F2)
* [html ](#editor%5F1)
html bash
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```
npm install @mercadopago/sdk-js
```
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Then, add the Public key of the account being integrated so that it can be identified when connecting to Mercado Pago. Learn more about Public key in \[Credentials\](https://www.mercadopago.com.pe/developers/en/docs/checkout-api-payments/additional-content/your-integrations/credentials).
* [html ](#editor%5F3)
* [javascript ](#editor%5F4)
html javascript
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```
import { loadMercadoPago } from "@mercadopago/sdk-js";
await loadMercadoPago();
const mp = new window.MercadoPago("YOUR_PUBLIC_KEY");
```
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