JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="text" />

JavaScript

$(document).ready(function(){
	$(document).bind("keydown", function(e){
  	if(e.keyCode == 116 || (e.keyCode == 116 && e.ctrlKey)){
    	e.preventDefault();
    	var c = confirm("are you sure?");
      if(c){
      	document.write("Going to go off the page");
      }
    }
  })
});