How to setup Paypal on a website to accept varying amounts for user to use their credit card? -


I am very confused with PayPal's site. Can people be guided to know the following information?

I need to be able to invoice users and use a credit card until the time of checkout the value will be unknown.

With PayPal, they want to see some post variables to know who you are, how much Charging is being done, if tax is ... In the past, I wrote some javascript functions to adjust before assigning them.

For example, here is the PayPal document.

The value of the javascript function to change the value is ======================================================================== <

To know more about how this value is created, it will determine how the Javascript (or JQuery) function looks.


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