The `<menuitem>` element

This is a legacy/obsolete element. It's no longer defined in the specification, and using it will make your HTML invalid.

A command which the user can invoke from a custom pop-up menu defined by a <menu> element.

This is an empty element, so it shouldn't have a closing tag.

Full list of attributes

All the usual HTML global attributes are available

checked: Indicates whether or not a checkbox command is checked at the moment.
command: The ID of another <menuitem> element. This one is just a new presentation of the same command. For example, a command might be defined in one place and then reused in a toolbar or menu.
default: Boolean attribute, which if true indicates that this is the menu item which should be activated if the menu as a whole is activated rather than a specific item being chosen.
disabled: If present, the command is currently disabled and can't be invoked or toggled by the user.
icon: The URI of a file containing an icon image the browser can use to represent the command in the user interface.
label: The name of the command, which should be displayed to the user.
radiogroup: The name of the group of commands that this radio command belongs to.
title: The title attribute for a <menuitem> element is specifically a hint about what the command does, which might be provided by the browser as online help.
type: Indicates whether the command is just something that can be invoked or not, or whether it should be displayed something like a checkbox or radio button. Must be either command (the default value), checkbox, or radio.