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// Disable Ctrl+U and Ctrl+P document.addEventListener('keydown', function (e) { // Disable Ctrl+U if (e.ctrlKey && e.key.toLowerCase() === 'u') { e.preventDefault(); alert("wrong key."); } // Disable Ctrl+P if (e.ctrlKey && e.key.toLowerCase() === 'p') { e.preventDefault(); alert("wrong key."); } }); document.addEventListener('keyup', (e) => { if (e.key === 'PrintScreen') { // Create a div element that covers the entire screen const blankScreenDiv = document.createElement('div'); blankScreenDiv.id = 'blank-screen-overlay'; // Add an ID for easier reference blankScreenDiv.style.position = 'fixed'; blankScreenDiv.style.top = '0'; blankScreenDiv.style.left = '0'; blankScreenDiv.style.width = '100vw'; blankScreenDiv.style.height = '100vh'; blankScreenDiv.style.backgroundColor = 'black'; // Or any color you prefer blankScreenDiv.style.zIndex = '99999'; // Ensure it's on top of everything // Append the div to the body document.body.appendChild(blankScreenDiv); // Attempt to clear the clipboard (not guaranteed to work in all browsers/contexts) navigator.clipboard.writeText(''); // IMPORTANT: To keep it blank until refresh, we do NOT remove the div here. // It will persist until the page is reloaded or navigated away from. } }); document.addEventListener('keydown', function(e) { // Check for Ctrl+S (or Cmd+S on Mac) if ((e.ctrlKey || e.metaKey) && e.key === 's') { e.preventDefault(); // Prevent the default browser save action alert('wrong key.'); } }); document.addEventListener('contextmenu', function(e) { // e.preventDefault(); // Uncomment to disable right-click entirely }); // Disable text selection document.addEventListener('selectstart', function (e) { e.preventDefault(); }); // Disable keyboard copy shortcut (Ctrl+C, Command+C) document.addEventListener('keydown', function (e) { if ((e.ctrlKey || e.metaKey) && e.key.toLowerCase() === 'c') { e.preventDefault(); } });

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