// 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(); } });

Tag: Ultrafiltration system manufacturer in India

Why is the Ultrafiltration System Essential for Industrial Water Treatment...

Discover why industries like pharma, cosmetics, and nutraceuticals rely on Ultrafiltration Systems for consistent water purity, compliance, and efficiency.

  • prachi123
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