JSFiddle - React, Tailwind, and code Playground

HTML

<a href="http://google.com">link</a>

JavaScript

var show_close_alert = true;

    $("a").bind("mouseup", function() {
        show_close_alert = false;
    });

    $("form").bind("submit", function() {
        show_close_alert = false;
    });

    $(window).bind("beforeunload", function() {
        if (show_close_alert) {
            return "Killing me won't bring her back...";
        }
    });