Detects the primary language of the content in a tab, using the Compact Language Detector (CLD).
This is an asynchronous function that returns a
Promise
.
var detecting = browser.tabs.detectLanguage(
tabId
,
// optional integer
callback
// optional function
)
tabId
可选
integer
. Defaults to the active tab of the current window.
callback
可选
function
. Currently, if a
tabId
is specified, this method uses this callback to return the results instead of returning a promise. The callback receives as its only input parameter a string containing the detected language code such as
en
or
fr
.
A
Promise
that will be fulfilled with a string representing an ISO language code such as
en
or
fr
. For a complete list of languages supported by this method, see
kLanguageInfoTable
. For an unknown language,
"und"
will be returned (but see
bug 1288263
). If any error occurs the promise will be rejected with an error message.
Detect and log the language of the active tab when the user clicks a browser action:
function onLanguageDetected(lang) {
console.log(`Language is: ${lang}`);
}
function onError(error) {
console.log(`Error: ${error}`);
}
browser.browserAction.onClicked.addListener(function() {
var detecting = browser.tabs.detectLanguage();
detecting.then(onLanguageDetected, onError);
});
Detect and log the language of every open tab when the user clicks a browser action (note that this example requires the "tabs" permission ):
function onLanguageDetected(url, lang) {
console.log(`Language in ${url} is: ${lang}`);
}
function onError(error) {
console.log(`Error: ${error}`);
}
function detectLanguages(tabs) {
for (tab of tabs) {
var onFulfilled = onLanguageDetected.bind(null, tab.url);
var detecting = browser.tabs.detectLanguage(tab.id);
detecting.then(onFulfilled, onError);
}
}
browser.browserAction.onClicked.addListener(function() {
var querying = browser.tabs.query({});
querying.then(detectLanguages, 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