CommandEvent: CommandEvent() constructor

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

The CommandEvent() constructor creates a new CommandEvent object.

Syntax

new CommandEvent(type)
new CommandEvent(type, options)

A string with the name of the event. It is case-sensitive and browsers set it to command.

An object that, in addition of the properties defined in Event(), can have the following properties:

source Optional: An HTMLButtonElement representing the button that was interacted with to cause this event. This can be any element but we recommend only using button as a source to avoid surprises.
command Optional: A string containing the command for the controlled element to take. While manually instantiating a CommandEvent it is possible to use any string value, but it is recommended to use one of the built-in names or prefix with two dashes (--) to ensure forward compatibility.