The questions are summarized under the links : https://stackoverflow.com/questions/55047766/paypal-javascript-sdk-client-side-js-how-work-fetch-function https://stackoverflow.com/users/login-add?ssrc=head&returnurl=https%3a%2f%2fstackoverflow.com%2fquestions%2f54835248%2fpaypal-checkout-and-javascript-function-control-input-fields In short, could somebody explain how i shall post 'orderID' from the client side to the server.
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