The command read-only property of the CommandEvent interface returns a string containing the value of the command property at the time the event was dispatched.
A string.
In the following simple example we've set up an event listener to listen for the "show-modal" command:
document.body.addEventListener(
"command",
(event) => {
const theAction = event.command;
if (theAction === "show-modal") {
console.log("Showing modal dialog");
}
},
{ capture: true },
);