index.md

---

title: commands.update()
slug: Mozilla/Add-ons/WebExtensions/API/commands/update
page-type: webextension-api-function
tags:
  - API
  - Add-ons
  - Extensions
  - Method
  - Reference
  - Update
  - WebExtensions
  - commands
browser-compat: webextensions.api.commands.update

---

{{AddonSidebar()}}

Change the description or keyboard shortcut for the given command.

This is an asynchronous function that returns a Promise.

Syntax

browser.commands.update(
  details // object
);

Parameters

• details

  • : object. An object with the following properties:

    • name

      • : string. The name of the command to update. This must match the name of an existing command, as given for example in the name property of the {{WebExtAPIRef("commands.Command")}} object.

    • description {{optional_inline}}

      • : string. A new description to set for the command.

    • shortcut {{optional_inline}}

      • : string. A new shortcut to set for the command. This can be:

        • an empty string to clear the shortcut.

        • a string matching the format of the commands manifest.json key to set a new shortcut key. If the string does not match this format, the function throws an error.

Return value

A Promise that will be fulfilled with no arguments when the shortcut has been updated. The promise will be rejected with an error if the command could not be found.

Browser compatibility

{{Compat}}

Examples

Updates the command named "my-command" with the given shortcut value, when the user clicks "update":

const commandName = 'my-command';

function updateShortcut() {
  browser.commands.update({
    name: commandName,
    shortcut: document.querySelector('#shortcut').value
  });
}

document.querySelector('#update').addEventListener('click', updateShortcut);

{{WebExtExamples}}