menus.update()
==============

Updates a previously created menu item.

For compatibility with other browsers, Firefox makes this method available via the `contextMenus` namespace as well as the `menus` namespace.

This is an asynchronous function that returns a `Promise`.

Syntax
------


```js
let updating = browser.menus.update(
  id,               // integer or string
  updateProperties // object
)
```

### Parameters

`id`

`integer` or `string`. The ID of the item to update.

`updateProperties`

`object`. The properties to update. The same as the `createProperties` object passed to `menus.create()`, except that `id` can't be set. In addition, `icons` can only be changed on menu commands, not on the top-level context menu. The top-level icon matches the extension's primary icon as declared in the extension's manifest file.

`checked` Optional

`boolean`. The initial state of a checkbox or radio item: `true` for selected and `false` for unselected. Only one radio item can be selected at a time in a given group of radio items.

`command` Optional

`string`. String describing an action that should be taken when the user clicks the item. The recognized values are:

* `"_execute_browser_action"`: simulate a click on the extension's browser action, opening its popup if it has one (Manifest V2 only)
* `"_execute_action"`: simulate a click on the extension's action, opening its popup if it has one (Manifest V3 only)
* `"_execute_page_action"`: simulate a click on the extension's page action, opening its popup if it has one
* `"_execute_sidebar_action"`: open the extension's sidebar

See the documentation of special shortcuts in the manifest.json key `commands` for details.

When one of the recognized values is specified, clicking the item does not trigger the `menus.onClicked` event; instead, the default action triggers, such as opening a pop-up. Otherwise, clicking the item triggers `menus.onClicked` and the event can be used to implement fallback behavior.

`contexts` Optional

`array` of ``menus.ContextType``. Array of contexts in which this menu item will appear. If this option is omitted:

* if the item's parent has contexts set, then this item will inherit its parent's contexts
* otherwise, the item is given a context array of ["page"].

`documentUrlPatterns` Optional

`array` of `string`. Lets you restrict the item to apply only to documents whose URL matches one of the given match patterns. This applies to frames as well.

`enabled` Optional

`boolean`. Whether this menu item is enabled or disabled. Defaults to `true`.

`icons` Optional

`object`. One or more custom icons to display next to the item. Custom icons can only be set for items appearing in submenus. This property is an object with one property for each supplied icon: the property's name should include the icon's size in pixels, and path is relative to the icon from the extension's root directory. The browser tries to choose a 16x16 pixel icon for a normal display or a 32x32 pixel icon for a high-density display. To avoid any scaling, you can specify icons like this:


```js
browser.menus.create({
  icons: {
    16: "path/to/geo-16.png",
    32: "path/to/geo-32.png",
  },
});
```


Alternatively, you can specify a single SVG icon, and it will be scaled appropriately:


```js
browser.menus.create({
  icons: {
    16: "path/to/geo.svg",
  },
});
```


**Note:** The top-level menu item uses the icons specified in the manifest rather than what is specified with this key.

`id` Optional

`string`. The unique ID to assign to this item. Mandatory for event pages. Cannot be the same as another ID for this extension.

`onclick` Optional

`function`. The function called when the menu item is clicked. Event pages cannot use this: instead, they should register a listener for `menus.onClicked`.

`parentId` Optional

`integer` or `string`. The ID of a parent menu item; this makes the item a child of a previously added item. Note: If you have created more than one menu item, then the items will be placed in a submenu. The submenu's parent will be labeled with the name of the extension.

`targetUrlPatterns` Optional

`array` of `string`. Similar to `documentUrlPatterns`, but lets you filter based on the `href` of anchor tags and the `src` attribute of img/audio/video tags. This parameter supports any URL scheme, even those that are usually not allowed in a match pattern.

`title` Optional

`string`. The text to be displayed in the item. Mandatory unless `type` is "separator".

You can use "`%s`" in the string. If you do this in a menu item, and some text is selected in the page when the menu is shown, then the selected text will be interpolated into the title. For example, if `title` is "Translate '%s' to Pig Latin" and the user selects the word "cool", then activates the menu, then the menu item's title will be: "Translate 'cool' to Pig Latin".

If the title contains an ampersand "&" then the next character will be used as an access key for the item, and the ampersand will not be displayed. Exceptions to this are:

* If the next character is also an ampersand: then a single ampersand will be displayed and no access key will be set. In effect, "&&" is used to display a single ampersand.
* If the next characters are the interpolation directive "%s": then the ampersand will not be displayed and no access key will be set.
* If the ampersand is the last character in the title: then the ampersand will not be displayed and no access key will be set.

Only the first ampersand will be used to set an access key: subsequent ampersands will not be displayed but will not set keys. So "&A and &B" will be shown as "A and B" and set "A" as the access key.

`type` Optional

``menus.ItemType``. The type of menu item: "normal", "checkbox", "radio", "separator". Defaults to "normal".

`viewTypes` Optional

``extension.ViewType``. List of view types where the menu item will be shown. Defaults to any view, including those without a `viewType`.

`visible` Optional

`boolean`. Whether the item is shown in the menu. Defaults to `true`.


### Return value

A `Promise` that will be fulfilled with no arguments if the update was successful, or rejected with an error message if the update failed.

Examples
--------

This example creates a menu item, then updates its title when the user clicks it:


```js
function onUpdated() {
  console.log("item updated successfully");
}

function onError() {
  console.log("error updating item:", browser.runtime.lastError);
}

browser.menus.create({
  id: "do-not-click-me",
  title: "Do not click this button",
  contexts: ["all"],
});

browser.menus.onClicked.addListener((info, tab) => {
  if (info.menuItemId === "do-not-click-me") {
    let updating = browser.menus.update(info.menuItemId, {
      title: "Do not click this button again",
    });
    updating.then(onUpdated, onError);
  }
});
```

### Example extensions

* menu-accesskey-visible
* menu-demo
* menu-labelled-open
Browser compatibility
---------------------

BCD tables only load in the browser with JavaScript enabled. Enable JavaScript to view data.

**Note:** This API is based on Chromium's `chrome.contextMenus` API. This documentation is derived from `context_menus.json` in the Chromium code.