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====== Web Sites - Disable right-clicking by using JavaScript ======

Simply add the following JavaScript code to the <body> section of your web page:

<code javascript>
<script language="JavaScript">
/**
  * Disable right-click of mouse, F12 key, and save key combinations on page
*/

window.onload = function() 
{
  document.addEventListener("contextmenu", function(e){
    e.preventDefault();
  }, false);
  document.addEventListener("keydown", function(e) {
  //document.onkeydown = function(e) {
    // CTRL + A
    if (e.ctrlKey && e.keyCode == 65) {
      disabledEvent(e);
    }
    // CTRL + C
    if (e.ctrlKey && e.keyCode == 67) {
      disabledEvent(e);
    }  
    // "C" key
    if (e.ctrlKey && e.shiftKey && e.keyCode == 67) {
      disabledEvent(e);
    }
    // "I" key
    if (e.ctrlKey && e.shiftKey && e.keyCode == 73) {
      disabledEvent(e);
    }
    // "J" key
    if (e.ctrlKey && e.shiftKey && e.keyCode == 74) {
      disabledEvent(e);
    }
    // "S" key + macOS
    if (e.keyCode == 83 && (navigator.platform.match("Mac") ? e.metaKey : e.ctrlKey)) {
      disabledEvent(e);
    }
    // "U" key
    if (e.ctrlKey && e.keyCode == 85) {
      disabledEvent(e);
    }
    // "F12" key
    if (event.keyCode == 123) {
      disabledEvent(e);
    }
  }, false);
  function disabledEvent(e){
    if (e.stopPropagation){
      e.stopPropagation();
    } else if (window.event){
      window.event.cancelBubble = true;
    }
    e.preventDefault();
    return false;
  }
};
</script>
</code>

This code will block the right click of mouse, Ctrl+A, Ctrl+C, Ctrl+Shift+C, Ctrl+Shift+I, Ctrl+Shift+J, Ctrl+S, Ctrl+U, and F12 key.

The F12 key uses for looking the source code of page, so it also need be disabled.

Also, for addition, you can add the **oncontextmenu** attribute to the **<body>** tag of your page HTML code:

<code html>
<body oncontextmenu="return false;">
</code>