JSFiddle - React, Tailwind, and code Playground

by mkzero

JavaScript

function make_red() {
    $(document.body).css('background-color', 'red');
}

function unload_cancelled_handler(f) {
    setTimeout(setTimeout(f, 500), 1);
}

$(function() {
    $(window).bind('beforeunload', function() {
        unload_cancelled_handler(make_red);

        return 'are you sure';
    });
});