Disable right-click, keyboard open console events

<script>
window.onload = function() {
  // Block keyboard events 
  document.onkeydown = function () {
    let e = window.event || arguments[0];
    //F12
    if(e.keyCode === 123) {
      return false;
      //Ctrl+Shift+I
    } else if((e.ctrlKey) && (e.shiftKey) && (e.keyCode === 73)) {
      return false;
      //Shift+F10
    } else if((e.shiftKey) && (e.keyCode === 121)) {
      return false;
      //Ctrl+U
    } else if((e.ctrlKey) && (e.keyCode === 85)) {
      return false;
    }
  };
  // Shield the right mouse button 
  document.oncontextmenu = function (){
    return false;
  }
}
</script>