How can I trigger ctrl+w on button click event using jquery/javascript

I have one sharepoint requirement of closing the browser or tab in google chrome after user click on submit button .Already tried window.close(); ,its not working in current version browsers (only working in IE) .So pls help with the code using jquery or javascript . Small code which i'm trying -

$(document).ready(function(){
            $("#btn").click(function () {   //btn -button id

            var e = $.Event();
            e.which == 87; //W keycode
            e.ctrlKey == true;
            $(this).trigger('e');

            alert(1);
        });
        });