window.onbeforeunload = Call;
function Call() {
return "Put some question here?";
}
// This will not print the message on firefox (the message appears in chrome, safari, Opera and IE)
Conteúdo para você se capacitar em programação
window.onbeforeunload = Call;
function Call() {
return "Put some question here?";
}
// This will not print the message on firefox (the message appears in chrome, safari, Opera and IE)