tabs.getZoom()
Gets the current zoom factor for the specified tab.
This is an asynchronous function that returns a Promise
.
Syntax
var gettingZoom = browser.tabs.getZoom(
tabId // optional integer
)
Parameters
Return value
A Promise
that will be fulfilled with the tab's current zoom factor, as a number between 0.3 and 3. If the tab could not be found or some other error occurs, the promise will be rejected with an error message.
Examples
Get the zoom factor for the current tab:
function onGot(zoom) {
console.log(zoom);
}
function onError(error) {
console.log(`Error: ${error}`);
}
var gettingZoom = browser.tabs.getZoom();
gettingZoom.then(onGot, onError);
Get the zoom factor for the tab whose ID is 2:
function onGot(zoom) {
console.log(zoom);
}
function onError(error) {
console.log(`Error: ${error}`);
}
var gettingZoom = browser.tabs.getZoom(2);
gettingZoom.then(onGot, onError);
Example extensions
Browser compatibility
Report problems with this compatibility data on GitHubwebextensions-desktop | webextensions-mobile | |||||
---|---|---|---|---|---|---|
getZoom | ChromeFull supportYes | EdgeFull support79 | FirefoxFull support45 | OperaFull supportYes | SafariFull support14 | Firefox for AndroidNo supportNo |
Legend
- Full support
- Full support
- No support
- No support
The compatibility table on 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.
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.