How can I prevent the Previous and Refresh buttons from returning my form?

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I am doing web development.

I have a page to do with credit card, which when user click "refresh" or "Back", the transaction will be performed one more time, which is unwanted.

This include Browser top left "Back" & "Refresh" button, "right click->Refresh/Back", press "F5" key. This is to be done on certain cgi page only, not all of them.

Can this be done using Javascript? Or any other method?


The standard way is to do it in 3 steps.

  1. the form page submits fields to processing page
  2. processing page processes data and redirects to result page
  3. result page just displays results, reloading it won't do any harm.