Javascript F12 Engelleme
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<script>
// Sağ tıklama engelle
document.addEventListener('contextmenu', event => event.preventDefault());
document.onkeydown = function (e) {
// F12 Engelle
if(e.keyCode == 123) {
return false;
}
// CTRL+I Engelle
if(e.ctrlKey && e.shiftKey && e.keyCode == 73){
return false;
}
// CTRL+J Engelle
if(e.ctrlKey && e.shiftKey && e.keyCode == 74) {
return false;
}
// CTRL+U Engelle
if(e.ctrlKey && e.keyCode == 85) {
return false;
}
}
</script>