HTML Form Basics for PayPal Payments Standard - PayPal Developer People who pay you through PayPal Payments Standard interact with HTML forms and hidden HTML input variables that you place on your website When someone clicks a payment button in an HTML form on a webpage, the form submits the variables and their values to PayPal
How to Integrate PayPal into Your HTML, CSS, and JS Product Pages Integrating PayPal into your own HTML CSS JS product pages can greatly improve the user experience and streamline the checkout process for your customers PayPal also has great developer documentation that makes this integration all the more user-friendly
HTML Variables for PayPal Payments Standard - PayPal Developer HTML variables for filling out PayPal checkout pages automatically let you specify information about buyers PayPal recommends that you include automatic fill-out variables with all of your payment buttons for consistent address handling in the checkout experience of your buyers
PayPal Demo Portal With the Demo Portal, you can explore various PayPal products tailored for your website or app, starting with a sample e-commerce site Select a product, see how it integrates into the site, and then customize its components to fit your specific needs
Create PayPal Payment Buttons Get a shareable link to accept payments for a single item or service You can even copy and paste code to add a payment button to your site Accept one-time and recurring donations with a custom Donate button, shareable link, or QR code
How do you a product id to the PayPal checkout button? Otherwise, go to PayPal buttons in Tools menu and click "Buy Now" It should display the button form as you see on page 9 in the above pdf The Item ID is where you put the Product Number