index.md

---

title: bookmarks.onMoved
slug: Mozilla/Add-ons/WebExtensions/API/bookmarks/onMoved
page-type: webextension-api-event
tags:
  - API
  - Add-ons
  - Bookmarks
  - Event
  - Extensions
  - Non-standard
  - Reference
  - WebExtensions
  - onMoved
browser-compat: webextensions.api.bookmarks.onMoved

---

{{AddonSidebar()}}

Fired when a bookmark or folder is moved to a different parent folder or position within a folder.

Note: If you're moving multiple bookmarks, because this API is asynchronous, the move calls may get processed in any order. Consequently, the value of each bookmark's index may change or be unknown until all the move calls are completed. If the index associated with a bookmark matters to your extension, then – when moving multiple bookmarks – the extension should wait for each bookmarks.move call to complete before moving the next bookmark. Waiting ensures that the index associated with each bookmark is not affected by a move call executing concurrently while the original call is in progress.

Syntax

browser.bookmarks.onMoved.addListener(listener)
browser.bookmarks.onMoved.removeListener(listener)
browser.bookmarks.onMoved.hasListener(listener)

Events have three functions:

• addListener(callback)

  • : Adds a listener to this event.

• removeListener(listener)

  • : Stop listening to this event. The listener argument is the listener to remove.

• hasListener(listener)

  • : Check whether listener is registered for this event. Returns true if it is listening, false otherwise.

addListener syntax

Parameters

• callback

  • : Function that will be called when this event occurs. The function will be passed the following arguments:

    • id

      • : string. ID of the item that was moved.

    • moveInfo

      • : object. Object containing more details about the move. See the moveInfo section for more details.

Additional objects

moveInfo

• parentId

  • : string. The new parent folder.

• index

  • : integer. The new index of this item in its parent.

• oldParentId

  • : string. The old parent folder.

• oldIndex

  • : integer. The old index of the item in its parent.

Browser compatibility

{{Compat}}

Examples

function handleMoved(id, moveInfo) {
  console.log(`Item: ${id} moved`);
  console.log(`Old index: ${moveInfo.oldIndex}`);
  console.log(`New index: ${moveInfo.index}`);
  console.log(`Old folder: ${moveInfo.oldParentId}`);
  console.log(`New folder: ${moveInfo.parentId}`);
}

function handleClick() {
  browser.bookmarks.onMoved.addListener(handleMoved);
}

browser.browserAction.onClicked.addListener(handleClick);

{{WebExtExamples}}

Note: This API is based on Chromium's chrome.bookmarks API. This documentation is derived from bookmarks.json in the Chromium code.