tabs.onCreated

Fired when a tab is created.

Note that the tab's URL may not be given its final value at the time this event fired. In particular, Firefox opens a new tab with the URL "about:blank" before loading the new page into it. You can listen to tabs.onUpdated events to be notified when a URL is set.

Syntax

browser.tabs.onCreated.addListener(callback)
browser.tabs.onCreated.removeListener(listener)
browser.tabs.onCreated.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:

tab
tabs.Tab. Details of the tab that was created.

Browser compatibility

ChromeEdgeFirefoxFirefox for AndroidOpera
Basic supportYesYes4554Yes

Examples

Log the IDs of newly created tabs:

function handleCreated(tab) {
  console.log(tab.id);
}
browser.tabs.onCreated.addListener(handleCreated);

Acknowledgements

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

Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.

Document Tags and Contributors

 Contributors to this page: Leif-AMO, wbamberg, Makyen
 Last updated by: Leif-AMO,