Fired when a tab is attached to a window, for example because it was moved between windows.
Syntax
browser.tabs.onAttached.addListener(listener) browser.tabs.onAttached.removeListener(listener) browser.tabs.onAttached.hasListener(listener)
Events have three functions:
addListener(callback)- Adds a listener to this event.
removeListener(listener)- Stop listening to this event. The
listenerargument is the listener to remove. hasListener(listener)- Check whether
listeneris registered for this event. Returnstrueif it is listening,falseotherwise.
addListener syntax
Parameters
callback-
Function that will be called when this event occurs. The function will be passed the following arguments:
tabIdinteger. ID of the tab that was attached to a new window.
attachInfoobject. ID of the new window, and index of the tab within it.
Additional objects
attachInfo
newWindowIdinteger. ID of the new window.newPositioninteger. Index position that the tab has in the new window.
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Chrome | Edge | Firefox | Firefox for Android | Opera | |
|---|---|---|---|---|---|
| Basic support | Yes | 15 | 45 | 54 | Yes |
Examples
Listen for attach events, and log the info:
function handleAttached(tabId, attachInfo) {
console.log("Tab: " + tabId + " attached");
console.log("New window: " + attachInfo.newWindowId);
console.log("New index: " + attachInfo.newPosition);
}
browser.tabs.onAttached.addListener(handleAttached);
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.
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