There are some way of detecting a close event from tab/browser without close when i click in other links in page or forms and valid for all browser, i tested "beforeunload" and other replies about this topic here and not working, i am testing in Firefox and Chrome This is not working :
window.onbeforeunload = function (event) {
var message = 'Important: Please click on \'Save\' button to leave this page.';
if (typeof event == 'undefined') {
event = window.event;
}
if (event) {
event.returnValue = message;
}
return message;
};
Same when i close the tab or the browser is doing nothing; but yes when i click a link