HTML5 events example

This example demonstrates registering for HTML5 events in Erlang.

It focuses on events that can be registered on a target. Events are registered on the window, the document and the input field when the corresponding checkbox is checked, and unregistered when it is unchecked.

This example also demonstrates usage of user data, which can be used to refer to the target element. Events are registered on window with no user data, on document with document as atom and on input field with a binary. See source code for more details.

Touch events require a browser with a touch interface. If you are using provided `wasm_webserver` sample web server, you can only access this website on localhost as Wasm samples only work over HTTPS or on localhost. You can nevertheless use iOS simulator on macOS to test touch interfaces or setup a web server with HTTPS and the proper headers.

Key events
Mouse events
Wheel events
UI events
Focus events
Touch events

Event log

# Event Timestamp Event map User data