Fired when a tab is zoomed.
browser.tabs.onZoomChange.addListener(listener) browser.tabs.onZoomChange.removeListener(listener) browser.tabs.onZoomChange.hasListener(listener)
Events have three functions:
addListener(callback)
removeListener(listener)
listener
argument is the listener to remove.hasListener(listener)
listener
is registered for this event. Returns true
if it is listening, false
otherwise.callback
Function that will be called when this event occurs. The function will be passed the following arguments:
ZoomChangeInfo
object
. Information about the zoom event.tabId
integer
. ID of the tab that was zoomed.oldZoomFactor
number
. The previous zoom factor.newZoomFactor
number
. The new zoom factor.zoomSettings
tabs.ZoomSettings
. Zoom settings for the tab.Listen for zoom events and log the info:
function handleZoomed(zoomChangeInfo) { console.log("Tab: " + zoomChangeInfo.tabId + " zoomed"); console.log("Old zoom: " + zoomChangeInfo.oldZoomFactor); console.log("New zoom: " + zoomChangeInfo.newZoomFactor); } browser.tabs.onZoomChange.addListener(handleZoomed);
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
onZoomChange |
Yes |
79 |
45 |
? |
Yes |
No |
? |
? |
No |
? |
? |
? |
Note: 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.
© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/onZoomChange