1. Use of the F12 key on the browser:
This can be blocked using a javascript key event listener. Use the below script to accomplish it.
<!-- wp:code -->
<pre class="wp-block-code"><code>$(document).keydown(function(e){
if(e.which === 123){
return false;
}
}); </code></pre>
<!-- /wp:code -->
2. Use of Right click
You can block this using javascript or with just your HTML
<html oncontextmenu="return false">
</html>
or
$(document).bind("contextmenu",function(e) {
e.preventDefault();
});
3. Use of other shortcuts involving Ctrl keys
<body oncontextmenu="return false" onkeydown="return false;" onmousedown="return false;">
Your body content
</body>
4. By temporarily removing DOM when the inspect is opened
What the below snippet does is detect when the debugger is opened, removes the code, and stores the code in a variable and when the debugger is closed, it returns it.
var currentHtmlContent;
var element = new Image();
var elementWithHiddenContent = document.querySelector("#element-to-hide");
var innerHtml = elementWithHiddenContent.innerHTML;
element.__defineGetter__("id", function() {
currentHtmlContent= "";
});
setInterval(function() {
currentHtmlContent= innerHtml;
console.log(element);
console.clear();
elementWithHiddenContent.innerHTML = currentHtmlContent;
}, 1000);