Gets the current zoom factor for the specified tab.
This is an asynchronous function that returns a
Promise
.
var gettingZoom = browser.tabs.getZoom(
tabId
// optional integer
)
tabId
可选
integer
. The ID of the tab to get the current zoom factor from. Defaults to the active tab of the current window.
A
Promise
that will be fulfilled with the tab's current zoom factor, as a number between 0.3 and 5. If the tab could not be found or some other error occurs, the promise will be rejected with an error message.
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);
BCD tables only load in the browser
注意：
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.
最后修改： , 由 MDN 贡献者