Search notes:

CustomElementRegistry

CustomElementRegistry is an experimental interface.
<!DOCTYPE html>
<html>
<head>
  <meta content="text/html;charset=utf-8" http-equiv="Content-Type">
  <title>CustomElementRegistry</title>

  <script>

    class tq84 extends HTMLElement {
       constructor() {
           alert ('tq84 ctor');
       }
    }

    function main() {
       customElements.define('tq-84', tq84);
    }

  </script>
</head>
<body onload='main()'>

   <p>&lt;tq-84&gt; follows:</p>

   <tq-84>
   </tq-84>

</body>
</html>

See also

window.customElements

Index

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 8 attempt to write a readonly database in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php:78 Stack trace: #0 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(78): PDOStatement->execute(Array) #1 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(30): insert_webrequest_('/notes/developm...', 1758198904, '216.73.216.150', 'Mozilla/5.0 App...', NULL) #2 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/development/web/APIs/interfaces/CustomElementRegistry/index(67): insert_webrequest() #3 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 78