--- title: Accept payment with Affirm slug: accept-payment-with-affirm published_at: 2022-05-31 21:00:23 +0000 updated_at: 2023-01-30 22:52:15 +0000 summary: description: In this episode, you'll learn how to accept an Affirm payment using Stripe.js. Enable your customers to buy-now-pay-later. The recommended integration for Affirm is with Stripe Checkout or the PaymentElement. In this episode, you'll learn how to directly integrate just with Stripe.js. ### Presenter CJ Avilla - Developer Advocate at Stripe - https://twitter.com/cjav_dev ### Resources https://stripe.com/docs/payments/affirm https://stripe.com/docs/payments/affirm/accept-a-payment https://github.com/stripe-samples/accept-a-payment/blob/main/custom-payment-flow/client/html/affirm.js ### Support If you have a question, please feel free to reach out to our support team on Discord at https://stripe.com/go/developer-chat ### Updates Sign up to stay updated with developer news: https://go.stripe.global/dev-digest ### Feedback If you have any feedback about this or other episodes, let us know: https://forms.gle/VjNqzRhotM2snYo88 #Stripe #Payments tags: [stripe, payments, affirm, affirm payments, accept affirm, accept affirm payments, affirm element, affirm message element, bnpl, buy now pay later, buy-now-pay-later, @cjav_dev] views: 1977 author: CJ Avilla url: https://www.cjav.dev/videos/accept-payment-with-affirm youtube_url: https://www.youtube.com/watch?v=x1HIIp-0Ow4 youtube_id: x1HIIp-0Ow4 embed_url: https://www.youtube.com/embed/x1HIIp-0Ow4 thumbnail_url: https://i.ytimg.com/vi/x1HIIp-0Ow4/hqdefault.jpg type: video --- # Accept payment with Affirm *Published: May 31, 2022* *Views: 1977* ## Watch [Watch on YouTube](https://www.youtube.com/watch?v=x1HIIp-0Ow4) [![Accept payment with Affirm](https://i.ytimg.com/vi/x1HIIp-0Ow4/hqdefault.jpg)](https://www.youtube.com/watch?v=x1HIIp-0Ow4) ## Description In this episode, you'll learn how to accept an Affirm payment using Stripe.js. Enable your customers to buy-now-pay-later. The recommended integration for Affirm is with Stripe Checkout or the PaymentElement. In this episode, you'll learn how to directly integrate just with Stripe.js. ### Presenter CJ Avilla - Developer Advocate at Stripe - https://twitter.com/cjav_dev ### Resources https://stripe.com/docs/payments/affirm https://stripe.com/docs/payments/affirm/accept-a-payment https://github.com/stripe-samples/accept-a-payment/blob/main/custom-payment-flow/client/html/affirm.js ### Support If you have a question, please feel free to reach out to our support team on Discord at https://stripe.com/go/developer-chat ### Updates Sign up to stay updated with developer news: https://go.stripe.global/dev-digest ### Feedback If you have any feedback about this or other episodes, let us know: https://forms.gle/VjNqzRhotM2snYo88 #Stripe #Payments ## Transcript in this episode you'll learn how to implement an html and javascript client to accept a one-time affirm payment with a custom form a firm gives your customers in the u.s a way to split purchases over a series of payments depending on the purchase they can pay with four interest free payments using split pay or pay over a longer term in installments which may include interest so in order to accept payment with a firm customers are redirected to the affirm site where they authorize the payment by agreeing to terms of some payment plan before returning to your website and that's where you're going to do order completion so once they accept the terms the funds are guaranteed and transferred to your stripe account then your customer repays a firm directly over time so the recommended way to integrate a firm is using stripe checkout or the payment element in today's demo we're going to show how to directly integrate a firm which you might use if you need to use server side confirmation or if you need to present payment methods individually so in this example we're going to assume that you already have a server set up for creating payment intents and you want to add support for confirming a firm payments on the front end if you don't already have a server implemented take a look at one of our example integrations in our officially supported server languages linked down in the description so our server is up and running and it has this create payment intent endpoint which takes in a payment method type and a currency as arguments this endpoint is going to create a payment intent on the server and return its client secret property which we're going to use to confirm the payment on the client all right let's take a look at what we've already got going on in this demo right now we have a very simple index.html page with a single link to affirm.html we're going to head over and implement that now you'll notice that at the top here we're already importing stripe.js from js.stripe.com we're also importing affirm.js and utils.js we're going to go implement affirm.js later but utils.js it's worth mentioning that that is just some simple helper methods for logging out messages to add a firm to our form we don't need any special stripe elements instead we can collect some billing information directly from the customer we'll also need to collect the shipping address that said you may want to include the affirm message element somewhere on your page it does not need to be inside of the payment form however the affirm message element is a special type of stripe element that will calculate and display the installment amounts and also display the affirm information in a modal now for a firm at a minimum we need the full shipping address of the customer it's also recommended that we collect the billing address but that's not required all right let's add some form elements to collect the customer's information we're going to organize all of these address fields inside of field sets one for billing and one for shipping for billing we're going to collect the name and the email address we're also going to collect the full address with line 1 city state postal code and country for shipping we need to know the name of the person that we're shipping to and also their full address line one city state postal code and country now if we refresh the page on the right hand side we can see that our form controls are rendered but if we attempt to click on pay nothing actually happens yet because we haven't wired up this form let's head over to affirm.js and handle this form submission but first we need to initialize an instance of the stripe object passing in our publishable key then we can grab reference to the form and add an event listener for the submit event we'll call prevent default so that the form does not cause a full page refresh then we need to create a payment intent on the server and use that payment intense client secret to confirm the payment on the client we're going to use the fetch api here to create a post request to our server's create payment intent endpoint that we looked at at the top of the show we'll pass in the currency and the payment method type now fetch is going to return this object we have to do this date this dance where we convert it its response to json that will return a promise that we can await and will resolve with either an error or a client secret if there's an error that we've aliased to backend error if there's an error we'll log that out to the console otherwise we'll continue on with the confirmation here we're going to use stripe.js and we're going to call confirm a firm payment and pass in the client secret and then this big options block inside of the options block we're going to include the payment method details some shipping details and a return url the billing details again include the email name and a full address and the shipping details again are going to have the name and the full address let's grab reference to all of our inputs using document.queryselector and then we'll fill them all in so that we are passing all of the data collected from the form to stripe client side so that we can confirm this affirm payment the return url is the url to which the customer will be redirected after they have successfully paid on the affirm site our page implements it very simply this return url is just a message div and return.js will fetch the payment intent and display some details like the id inside of that message div all right let's take it for a spin when we click on pay we're redirected to the test payment page now in practice this would be the affirm site where they would see the amount that they need to pay and agree to some payment plan terms great we have a successful payment let's check it out in the stripe dashboard we can confirm that it was actually in a firm payment and we see the amount there because we want to make sure that we have the best conversion possible let's add that a firm message on our page so that we can tell customers ahead of checkout that they are using a firm in order to do so we create a div inside of our affirm.html page with the id of affirm message next we head over to affirm.js and we're going to create an elements group using stripe.js we're also going to create some options that we're going to use to pass in when we create the affirm message we'll include the amount that we're going to collect and its currency now we can create the affirm message element we pass in the name of the element a firm message and we also pass in some options now we can call affirm message element.mount and pass in the id of the div that we just added to our html when we refresh the page you'll notice this new affirm message at the top that says 4 interest free payments of 15 with a firm as a quick recap we initialized stripe.js we displayed this affirm message we mounted a form and said when the form is submitted we're going to create an ajax request to create payment intent passing along the currency and the affirm payment method type when we got back that payment intense client secret we called confirm a firm payment passing in a whole bunch of data that we collected from the front end in terms of billing and shipping address and a return url to which the customer is redirected after they successfully pay on the affirm page at this point you are fully equipped to head out and build in a firm payment method integration again we recommend using either stripe checkout or the payment element neither of which we talked about today because we wanted to show you how to get down to the bare bones and implement a firm directly in case you needed to do so the code for this episode is available in our accept a payment stripe sample if you head over to github.com stripe samples and finally accept a payment sample you'll be able to see the code for the affirm payment method type alongside many many others thank you so much for watching and we'll see in the next one --- [Back to all videos](https://www.cjav.dev/videos) --- ## Hey Agent, thanks for visiting! 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