> For the complete documentation index, see [llms.txt](https://developer.paddle.com/llms.txt).

# Methods

Explore the methods available in Paddle.js to interact with checkouts and pricing pages.

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- [Paddle.Initialize()](https://developer.paddle.com/paddle-js/methods/paddle-initialize.md)
- [Paddle.Update()](https://developer.paddle.com/paddle-js/methods/paddle-update.md)
- [Paddle.Environment.set()](https://developer.paddle.com/paddle-js/methods/paddle-environment-set.md)
- [Paddle.Checkout.open()](https://developer.paddle.com/paddle-js/methods/paddle-checkout-open.md)
- [Paddle.Checkout.updateCheckout()](https://developer.paddle.com/paddle-js/methods/paddle-checkout-updatecheckout.md)
- [Paddle.Checkout.updateItems()](https://developer.paddle.com/paddle-js/methods/paddle-checkout-updateitems.md)
- [Paddle.Checkout.close()](https://developer.paddle.com/paddle-js/methods/paddle-checkout-close.md)
- [Paddle.PricePreview()](https://developer.paddle.com/paddle-js/methods/paddle-pricepreview.md)
- [Paddle.TransactionPreview()](https://developer.paddle.com/paddle-js/methods/paddle-transactionpreview.md)
- [Paddle.Retain.demo()](https://developer.paddle.com/paddle-js/methods/paddle-retain-demo.md)
- [Paddle.Retain.initCancellationFlow()](https://developer.paddle.com/paddle-js/methods/paddle-retain-initcancellationflow.md)
- [Paddle.Status.libraryVersion](https://developer.paddle.com/paddle-js/methods/paddle-status-libraryversion.md)