Prevent resubmit form after click “back” button

Question

I have 2 pages :

page1.php :
- has a form with text box and a \"submit\" button. Eg :

Answer 1

One way is to submit the Formdata via Ajax to a remote Script and if the Query returns success you can jump the a "Thank You" Page. So the User can hit the Back Button and the "Reload" Request doesn't pop up.

Hope the Idea helps you