How to show prompt message when refreshing the page

Question

I work on Javascript and I have a simple page.I need to prompt message appear when user want to refresh the page(F5, so on). Is there any method to do so? I have tried to use method="post", but because I dont submit anything in my page it doesnt work at all.
Most of the time users want to disable prompt message, but what to do if I want to appear it?
Alert message?
Any ideas?

@rene You were faster finding a duplicate than I writing this short answer. :) — insertusernamehere, Sep 09 '13 at 18:07
@insertusernamehere sorry, give me a call next time and I'll move on...:) Nice demo... — rene, Sep 09 '13 at 18:10

score 2 · Accepted Answer · answered Sep 09 '13 at 18:07

You can use window.onbeforeunload. The user will be prompted your message and he has the possibility to stay or to leave.

JavaScript

window.onbeforeunload = function(e) {
    return "Don't leave";
};

Demo

Try before buy

Learn more on the MDN window.onbeforeunload

How to show prompt message when refreshing the page

1 Answers1

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