I have this kind of a problem in which I add a text to a site with an input field.
The text appears on the same page. When I click submit, if I use go.back(-2)
nothing happened (but really happened, if he would just refresh that page).
pop up the question "page can not be shown unless sending the previous data.."
if I click "send again" the action happens twice: the text is added two times.
If i click "cancel" the action happens once: the text is added one time (ok!).
So How can I remove/change the code so that the browser does not ask that
question and confuse people and double post the inputted texts if clicked "send again"?
Thanks in advance!