https://gbkgames.org/jsload/confirmation.js

1// Confirm before unload
2function confirmBeforeUnload(e) {
3    if (localStorage.getItem('confirmationEnabled') === 'true' && (e.clientY < 0 || e.clientY === undefined)) {
4        var confirmationMessage = 'Are you sure you want to leave? You may lose your progress.';
5        e.returnValue = confirmationMessage;
6        return confirmationMessage;
7    }
8}
9
10window.addEventListener('beforeunload', confirmBeforeUnload);
11
12document.addEventListener('DOMContentLoaded', function() {
13    // Handle confirmation toggle
14    var toggleConfirmation = document.getElementById('toggleConfirmation');
15    if (localStorage.getItem('confirmationEnabled') === 'true') {
16        toggleConfirmation.checked = true;
17    }
18
19    // Handle FPS counter
20    if (localStorage.getItem('fpsCounterEnabled') === 'true') {
21        loadFpsCounterScript();
22        document.getElementById('fps').style.display = 'block';
23    } else {
24        document.getElementById('fps').style.display = 'none';
25    }
26
27    function loadFpsCounterScript() {
28        if (!document.getElementById('fpsCounterScript')) {
29            var script = document.createElement('script');
30            script.id = 'fpsCounterScript';
31            script.src = 'jsload/fpsCounter.js';
32            document.body.appendChild(script);
33        }
34    }
35
36    function unloadFpsCounterScript() {
37        var script = document.getElementById('fpsCounterScript');
38        if (script) {
39            script.remove();
40        }
41        document.getElementById('fps').innerHTML = "--";
42        document.getElementById('fps').style.display = 'none';
43    }
44});