notifications.update() 编辑

Updates a notification, given its ID.

This is an asynchronous function that returns a Promise.

Syntax

var updating = browser.notifications.update(
  id,                            // string
  options                        // NotificationOptions
)

Parameters

id

string. The ID of the notification to update. This is the same as the ID passed into notifications.create()'s callback.

options

notifications.NotificationOptions. Defines the notification's new content and behavior.

Return value

A Promise that will be fulfilled with a boolean: true if the notification was updated, or false if it was not (for example, because the notification referenced by id did not exist).

Browser compatibility

BCD tables only load in the browser

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.

Examples

This example uses update() to update a progress notification. Clicking the browser action shows the notification and starts an alarm, which we use to update the notification's progress indicator.

Note that you'll need the "alarms" permission to create alarms (as well as the "notifications" permission to create notifications). Also note that Firefox does not support the progress attribute.

var cakeNotification = "cake-notification";

/*

CAKE_INTERVAL is set to 0.3 seconds in this example.
Such a short period is chosen to make the extension's behavior
more obvious, but this is not recommended in real life.
Note that in Chrome, alarms cannot be set for less than
a minute.

*/
var CAKE_PREP_INTERVAL = 0.005;

var progress = 0;

browser.alarms.onAlarm.addListener(function(alarm) {
  progress = progress + 10;
  if (progress > 100) {
    browser.notifications.clear(cakeNotification);
    browser.alarms.clear("cake-progress");
  } else {
    browser.notifications.update(cakeNotification, {
      "progress": progress
    });
  }
});

browser.browserAction.onClicked.addListener(function () {
  browser.notifications.getAll((all) => {
    if (all.length > 0) {
      browser.notifications.clear(cakeNotification);
      return;
    }
    progress = 0;
    browser.notifications.create(cakeNotification, {
      "type": "progress",
      "iconUrl": browser.extension.getURL("icons/cake-48.png"),
      "title": "Your cake is being prepared...",
      "message": "Something something cake",
      "progress": progress
    });
    browser.alarms.create(
      "cake-progress",
      {periodInMinutes: CAKE_PREP_INTERVAL}
    );
  });
});

This API is based on Chromium's chrome.notifications API.

Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.