King of JavaScript Online HTML Editor

<!DOCTYPE html>
<html>
<body>
   <h2>First Name : <span id='firstName'></span></h2>
   <h2>Last Name : <span id='lastName'></span></h2>
   <h2>Email : <span id='email'></span></h2>
   <script>
     var getUrl = window.location.search.slice(1);
        
     getUrl = getUrl.replaceAll('=', '":"');
     getUrl = getUrl.replaceAll('&', '","');
     getUrl = getUrl.replaceAll('%20', ' ');
     getUrl = '{"' + getUrl + '"}';
      
     var obj = JSON.parse(getUrl);
      
     //display
     document.getElementById('firstName').innerText = obj.fname;
     document.getElementById('lastName').innerText = obj.lname;
     document.getElementById('email').innerText = obj.email;
   </script>
</body>
</html>