capturing f5 keypress event in javascript using window.event.keyCode in [removed] event is always 0 and not 116

Question

i am creating an MVC application.There was a neccessitity to make a variable in a session to null upon closing of the application (i.e. window/tab) but not upon refreshing t

Answer 1

You could just write it like this:

$(document.body).on("keydown", this, function (event) {
    if (event.keyCode == 116) {
        alert('F5 pressed!');
    }
});