> For the complete documentation index, see [llms.txt](https://docs.2checkout.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.2checkout.com/shopping-carts/inline/use-cases/set-sale-source-in-the-inline-cart.md).

# Set sale source in the InLine Cart

## Overview

Use the Cart object to set a sale source for the InLine Cart by calling the `TwoCoInlineCart.cart.setSource(source)` method.

## Use case

1. Add an HTML link or button in your page like the one below.
2. Create a JavaScript click handler to execute the Inline Client desired methods.
3. Use the`TwoCoInlineCart.products.add({code, quantity, options})`method to prepare your catalog product.
4. In order to set sale source use`TwoCoInlineCart.cart.setSource('YouTube Channel')`.
5. Use the`TwoCoInlineCart.cart.checkout()`method to show the cart on your page.

## Sample request

### HTML

```html
<a href="#" class="btn btn-success" id="buy-button">Buy now!</a>
```

### JavaScript

```javascript
window.document.getElementById('buy-button').addEventListener('click', function() {
  TwoCoInlineCart.products.add({
    code: "74B8E17CC0"
  });
  TwoCoInlineCart.cart.setSource('YouTube Channel');
  TwoCoInlineCart.cart.checkout();
});
```

## Demo

After setting the sale source to the InLine cart using the above method, your cart should look like this:

{% embed url="<https://codepen.io/2checkout-documentation/pen/zVGOow>" %}


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