pageAction.setIcon() 编辑

Sets the icon for the page action.

You can specify a single icon as either the path to an image file or a pageAction.ImageDataType object.

You can specify multiple icons in different sizes by supplying a dictionary containing multiple paths or ImageData objects. This means the icon doesn't have to be scaled for a device with a different pixel density.

This is an asynchronous function that returns a Promise.

Syntax

var settingIcon = browser.pageAction.setIcon(
  details         // object
)

Parameters

details

object. An object containing either imageData or path properties, and a tabId property.

imageDataOptional

pageAction.ImageDataType or object. This is either a single ImageData object or a dictionary object.

Use a dictionary object to specify multiple ImageData objects in different sizes, so the icon does not have to be scaled for a device with a different pixel density. If imageData is a dictionary, the value of each property is an ImageData object, and its name is its size, like this:

{
  16: image16,
  32: image32
}

The browser will choose the image to use depending on the screen's pixel density. See Choosing icon sizes for more information on this.

pathOptional

string or object. This is either a relative path to an icon file or a dictionary object. 

Use a dictionary object to specify multiple icon files in different sizes, so the icon does not have to be scaled for a device with a different pixel density. If path is a dictionary, the value of each property is a relative path, and its name is its size, like this:

{
  16: "path/to/image16.jpg",
  32: "path/to/image32.jpg"
}

The browser will choose the image to use depending on the screen's pixel density. See Choosing icon sizes for more information on this.

If path is null, this will reset the page action's icon to the icon that was given in the page_action manifest key.

If path is "", this will reset the icon to the browser's global default icon (that is, the icon used if no icon is given in the page_action manifest key).

If path does not point to a valid icon, then no icon will be displayed.

tabId

integer. The ID of the tab whose icon you want to set.

Return value

A Promise that will be fulfilled with no arguments once the icon has been set.

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

Set the icon for the page action when the user clicks it:

browser.pageAction.onClicked.addListener((tab) => {
  browser.pageAction.setIcon({
    tabId: tab.id, path: "icons/icon-48.png"
  });
});

Example extensions

• apply-css

This API is based on Chromium's chrome.pageAction API. This documentation is derived from page_action.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.

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