mirror of
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231 lines
11 KiB
Markdown
231 lines
11 KiB
Markdown
# webextensions-examples
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[https://github.com/mdn/webextensions-examples](https://github.com/mdn/webextensions-examples)
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Maintained by the [MDN team at Mozilla](https://wiki.mozilla.org/MDN).
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WebExtensions are a way to write browser extensions: that is, programs
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installed inside a web browser that modify the behaviour of the browser or
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of web pages loaded by the browser. They are built on a set of
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cross-browser APIs, so WebExtensions written for Google Chrome or Opera will
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in most cases run in Firefox or Edge too.
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The "webextensions-examples" repository is a collection of simple but complete
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and installable WebExtensions. You can use the examples to see how to use the
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WebExtensions APIs, and as a starting point for your own WebExtensions.
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The examples are made available under the
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[Mozilla Public License 2.0](https://www.mozilla.org/en-US/MPL/2.0/).
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## How to use "webextensions-examples"
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To use the repository, first clone it.
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Each example is in its own top-level directory. Install an example in your
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favourite web browser ([installation instructions](#installing-an-example) are below),
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and see how it works. Each example has its own short README explaining what
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it does.
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To find your way around a WebExtension's internal structure, have a look at the
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[Anatomy of a WebExtension](https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Anatomy_of_a_WebExtension)
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page on MDN.
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To use these examples in Firefox, you should use the most recent release
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of Firefox. Some examples work with earlier releases.
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A few examples rely on APIs that are currently only available in pre-release
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versions of Firefox. Where this is the case, the example should declare
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the minimum version that it needs in the `strict_min_version` part of the
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[applications key](https://developer.mozilla.org/en-US/Add-ons/WebExtensions/manifest.json/applications)
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in its manifest.json file.
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## Installing an example
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There are a couple ways to try out the example extensions in this repository.
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1. Open Firefox and load `about:debugging` in the URL bar. Click the
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[Load Temporary Add-on](https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Temporary_Installation_in_Firefox)
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button and select the `manifest.json` file within the
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directory of an example extension you'd like to install.
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Here is a [video](https://www.youtube.com/watch?v=cer9EUKegG4)
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that demonstrates how to do this.
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2. Install the
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[web-ext](https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Getting_started_with_web-ext)
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tool, change into the directory of the example extension
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you'd like to install, and type `web-ext run`. This will launch Firefox and
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install the extension automatically. This tool gives you some
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additional development features such as
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[automatic reloading](https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Getting_started_with_web-ext#Automatic_extension_reloading).
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## Index of examples
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/annotate-page">annotate-page</a></dt>
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<dd>Sidebar demo.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/apply-css">apply-css</a></dt>
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<dd>Inserts CSS into a web page.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/beastify">beastify</a></dt>
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<dd>Adds a browser action with a popup and injects a script into a web page.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/bookmark-it">bookmark-it</a></dt>
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<dd>Adds and removes bookmarks.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/borderify">borderify</a></dt>
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<dd>Injects scripts into pages that match a URL pattern.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/chill-out">chill-out</a></dt>
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<dd>Page action demo, plus some features of <code>alarms</code> and <code>tabs</code>.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/commands">commands</a></dt>
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<dd>Defines keyboard shortcuts.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/context-menu-copy-link-with-types">context-menu-copy-link-with-types</a></dt>
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<dd>Advanced clipboard interaction, including copy to clipboard from a background page.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/context-menu-demo">context-menu-demo</a></dt>
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<dd>Adds items to the context menu.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/contextual-identities">contextual-identities</a></dt>
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<dd>Contextual identities (containers) demo.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/cookie-bg-picker">cookie-bg-picker</a></dt>
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<dd>Demo using cookies, browser actions with popups, and content scripts.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/embedded-webextension-bootstrapped">embedded-webextension-bootstrapped</a></dt>
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<dd>An embedded WebExtension in a bootstrapped Firefox add-on.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/embedded-webextension-sdk">embedded-webextension-sdk</a></dt>
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<dd>An embedded WebExtension in an Add-on SDK Firefox add-on.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/emoji-substitution">emoji-substitution</a></dt>
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<dd>Injects content scripts into web pages matching a given URL pattern.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/eslint-example">eslint-example</a></dt>
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<dd>How to configure a WebExtension with eslint.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/favourite-colour">favourite-colour</a></dt>
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<dd>Demo of storage and options(settings) pages.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/firefox-code-search">firefox-code-search</a></dt>
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<dd>Customizes the behavior of the browser's address bar.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/forget-it">forget-it</a></dt>
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<dd>Clears stored browsing data.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/google-userinfo">google-userinfo</a></dt>
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<dd>Authenticates the user with Google.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/history-deleter">history-deleter</a></dt>
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<dd>Clears browsing history entries by domain.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/latest-download">latest-download</a></dt>
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<dd>Displays the most recently downloaded item.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/list-cookies">list-cookies</a></dt>
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<dd>Lists all cookies in the active tab.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/mocha-client-tests">mocha-client-tests</a></dt>
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<dd>Tests the add-on using Mocha.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/native-messaging">native-messaging</a></dt>
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<dd>Exchanges messages between the add-on and a Python program installed on the user's computer.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/navigation-stats">navigation-stats</a></dt>
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<dd>Collects and displays statistics for sites the user navigates to.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/notify-link-clicks-i18n">notify-link-clicks-i18n</a></dt>
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<dd>Displays localized notifications when the user clicks on links.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/open-my-page-button">open-my-page-button</a></dt>
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<dd>Opens a page bundled with the add-on, when the user clicks a toolbar button.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/page-to-extension-messaging">page-to-extension-messaging</a></dt>
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<dd>Exchanges messages between a web page and the add-on.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/permissions">permissions</a></dt>
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<dd>Demo showing how to ask the user for additional permissions at runtime.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/quicknote">quicknote</a></dt>
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<dd>Note-taking add-on: shows how to store data, and how to use browser actions and popups.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/react-es6-popup">react-es6-popup</a></dt>
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<dd>How to use React and ES6 in an add-on.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/selection-to-clipboard">selection-to-clipboard</a></dt>
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<dd>Basic clipboard example: copying to the clipboard in a content script.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/stored-credentials">stored-credentials</a></dt>
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<dd>Performs HTTP basic authentication using a stored username and password.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/tabs-tabs-tabs">tabs-tabs-tabs</a></dt>
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<dd>Demo of various <code>tabs</code> functions: open, close, move, etc.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/top-sites">top-sites</a></dt>
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<dd>Replaces the "new tab" page with links to pages that the user often visits.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/user-agent-rewriter">user-agent-rewriter</a></dt>
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<dd>Intercepts and modifies HTTP requests.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/webpack-modules">webpack-modules</a></dt>
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<dd>Uses webpack to package npm modules for use in an add-on.</dd>
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</dl>
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<dl><dt><a href="https://github.com/mdn/webextensions-examples/tree/master/window-manipulator">window-manipulator</a></dt>
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<dd>Demo of various <code>windows</code> functions: create, close, resize, etc.</dd>
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</dl>
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## Learn more
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To learn more about developing WebExtensions, see the
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[WebExtensions documentation on MDN](https://developer.mozilla.org/en-US/Add-ons/WebExtensions)
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for getting started guides, tutorials, and full API reference docs.
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## Problems?
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If you find a problem, please [file a bug](https://github.com/mdn/webextensions-examples/issues/new).
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If you need help, email the [dev-addons mailing list](https://mail.mozilla.org/listinfo/dev-addons) or contact the WebExtensions team in the #webextensions IRC channel on irc.mozilla.org.
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## Contributing
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We welcome contributions, whether they are whole new examples, new features,
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bug fixes, or translations of localizable strings into new languages. Please
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see the [CONTRIBUTING.md](https://github.com/mdn/webextensions-examples/blob/master/CONTRIBUTING.md) file for more details.
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