Topic: JavaScript – Page 2

The new dialog element is more than a display toggle because it provides better focus handling, inert functionality and closes on keypress.

Learn how an Array.includes makes JavaScript if conditions more readable.

The second parameter of Array.prototype.recude() (the initial value) is optional.

Use reportError to report errors to global error event handlers.

Use capture groups in regular expressions to preserve the separators in the result of String.prototype.split().