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| <title>Tutorial: Getting Started (Hello, World!) - Google Chrome Extensions - Google Code</title></head> |
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| <div style="display:none"> |
| |
| <!-- VALUE --> |
| <div id="valueTemplate"> |
| <dt> |
| <var>paramName</var> |
| <em> |
| |
| <!-- TYPE --> |
| <div style="display:inline"> |
| ( |
| <span class="optional">optional</span> |
| <span class="enum">enumerated</span> |
| <span id="typeTemplate"> |
| <span> |
| <a> Type</a> |
| </span> |
| <span> |
| <span> |
| array of <span><span></span></span> |
| </span> |
| <span>paramType</span> |
| <span></span> |
| </span> |
| </span> |
| ) |
| </div> |
| |
| </em> |
| </dt> |
| <dd class="todo"> |
| Undocumented. |
| </dd> |
| <dd> |
| Description of this parameter from the json schema. |
| </dd> |
| <dd> |
| This parameter was added in version |
| <b><span></span></b>. |
| You must omit this parameter in earlier versions, |
| and you may omit it in any version. If you require this |
| parameter, the manifest key |
| <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a> |
| can ensure that your extension won't be run in an earlier browser version. |
| </dd> |
| |
| <!-- OBJECT PROPERTIES --> |
| <dd> |
| <dl> |
| <div> |
| <div> |
| </div> |
| </div> |
| </dl> |
| </dd> |
| |
| <!-- FUNCTION PARAMETERS --> |
| <dd> |
| <div></div> |
| </dd> |
| |
| </div> <!-- /VALUE --> |
| |
| <div id="functionParametersTemplate"> |
| <h5>Parameters</h5> |
| <dl> |
| <div> |
| <div> |
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| <!-- API HEADER --> |
| <table id="header" width="100%" cellspacing="0" border="0"> |
| <tbody><tr> |
| <td valign="middle"><a href="http://code.google.com/"><img src="images/code_labs_logo.gif" height="43" width="161" alt="Google Code Labs" style="border:0; margin:0;"></a></td> |
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| |
| <div id="codesiteContent" class=""> |
| |
| <a id="gc-topnav-anchor"></a> |
| <div id="gc-topnav"> |
| <h1>Google Chrome Extensions (<a href="http://code.google.com/labs/">Labs</a>)</h1> |
| <ul id="home" class="gc-topnav-tabs"> |
| <li id="home_link"> |
| <a href="index.html" title="Google Chrome Extensions home page">Home</a> |
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| <a href="faq.html" title="Answers to frequently asked questions about Google Chrome Extensions">FAQ</a> |
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| <a href="samples.html" title="Sample extensions (with source code)">Samples</a> |
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| <a href="http://groups.google.com/a/chromium.org/group/chromium-extensions" title="Google Chrome Extensions developer forum">Group</a> |
| </li> |
| </ul> |
| </div> <!-- end gc-topnav --> |
| |
| <div class="g-section g-tpl-170"> |
| <!-- SIDENAV --> |
| <div class="g-unit g-first" id="gc-toc"> |
| <ul> |
| <li class="leftNavSelected">Getting Started</li> |
| <li><a href="overview.html">Overview</a></li> |
| <li><a href="whats_new.html">What's New?</a></li> |
| <li><h2><a href="devguide.html">Developer's Guide</a></h2> |
| <ul> |
| <li>Browser UI |
| <ul> |
| <li><a href="browserAction.html">Browser Actions</a></li> |
| <li><a href="contextMenus.html">Context Menus</a></li> |
| <li><a href="notifications.html">Desktop Notifications</a></li> |
| <li><a href="omnibox.html">Omnibox</a></li> |
| <li><a href="options.html">Options Pages</a></li> |
| <li><a href="override.html">Override Pages</a></li> |
| <li><a href="pageAction.html">Page Actions</a></li> |
| </ul> |
| </li> |
| <li>Browser Interaction |
| <ul> |
| <li><a href="bookmarks.html">Bookmarks</a></li> |
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| <li><a href="events.html">Events</a></li> |
| <li><a href="history.html">History</a></li> |
| <li><a href="management.html">Management</a></li> |
| <li><a href="tabs.html">Tabs</a></li> |
| <li><a href="windows.html">Windows</a></li> |
| </ul> |
| </li> |
| <li>Implementation |
| <ul> |
| <li><a href="a11y.html">Accessibility</a></li> |
| <li><a href="background_pages.html">Background Pages</a></li> |
| <li><a href="content_scripts.html">Content Scripts</a></li> |
| <li><a href="xhr.html">Cross-Origin XHR</a></li> |
| <li><a href="idle.html">Idle</a></li> |
| <li><a href="i18n.html">Internationalization</a></li> |
| <li><a href="messaging.html">Message Passing</a></li> |
| <li><a href="npapi.html">NPAPI Plugins</a></li> |
| </ul> |
| </li> |
| <li>Finishing |
| <ul> |
| <li><a href="hosting.html">Hosting</a></li> |
| <li><a href="external_extensions.html">Other Deployment Options</a></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| <li><h2><a href="apps.html">Packaged Apps</a></h2></li> |
| <li><h2><a href="tutorials.html">Tutorials</a></h2> |
| <ul> |
| <li><a href="tut_debugging.html">Debugging</a></li> |
| <li><a href="tut_analytics.html">Google Analytics</a></li> |
| <li><a href="tut_oauth.html">OAuth</a></li> |
| </ul> |
| </li> |
| <li><h2>Reference</h2> |
| <ul> |
| <li>Formats |
| <ul> |
| <li><a href="manifest.html">Manifest Files</a></li> |
| <li><a href="match_patterns.html">Match Patterns</a></li> |
| </ul> |
| </li> |
| <li><a href="permission_warnings.html">Permission Warnings</a></li> |
| <li><a href="api_index.html">chrome.* APIs</a></li> |
| <li><a href="api_other.html">Other APIs</a></li> |
| </ul> |
| </li> |
| <li><h2><a href="samples.html">Samples</a></h2></li> |
| <div class="line"> </div> |
| <li><h2>More</h2> |
| <ul> |
| <li><a href="http://code.google.com/chrome/webstore/docs/index.html">Chrome Web Store</a></li> |
| <li><a href="http://code.google.com/chrome/apps/docs/developers_guide.html">Hosted Apps</a></li> |
| <li><a href="themes.html">Themes</a></li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <script> |
| initToggles(); |
| </script> |
| |
| <div class="g-unit" id="gc-pagecontent"> |
| <div id="pageTitle"> |
| <h1 class="page_title">Tutorial: Getting Started (Hello, World!)</h1> |
| </div> |
| <!-- TABLE OF CONTENTS --> |
| <div id="toc"> |
| <h2>Contents</h2> |
| <ol> |
| <li> |
| <a href="#load">Create and load an extension</a> |
| <ol> |
| <li style="display: none; "> |
| <a>h3Name</a> |
| </li> |
| </ol> |
| </li><li> |
| <a href="#code">Add code to the extension</a> |
| <ol> |
| <li style="display: none; "> |
| <a>h3Name</a> |
| </li> |
| </ol> |
| </li><li> |
| <a href="#summary">Now what?</a> |
| <ol> |
| <li style="display: none; "> |
| <a>h3Name</a> |
| </li> |
| </ol> |
| </li> |
| <li style="display: none; "> |
| <a href="#apiReference">API reference</a> |
| <ol> |
| <li> |
| <a href="#properties">Properties</a> |
| <ol> |
| <li> |
| <a href="#property-anchor">propertyName</a> |
| </li> |
| </ol> |
| </li> |
| <li> |
| <a href="#methods">Methods</a> |
| <ol> |
| <li> |
| <a href="#method-anchor">methodName</a> |
| </li> |
| </ol> |
| </li> |
| <li> |
| <a href="#events">Events</a> |
| <ol> |
| <li> |
| <a href="#event-anchor">eventName</a> |
| </li> |
| </ol> |
| </li> |
| <li> |
| <a href="#types">Types</a> |
| <ol> |
| <li> |
| <a href="#id-anchor">id</a> |
| </li> |
| </ol> |
| </li> |
| </ol> |
| </li> |
| </ol> |
| </div> |
| <!-- /TABLE OF CONTENTS --> |
| |
| <!-- Standard content lead-in for experimental API pages --> |
| <p id="classSummary" style="display: none; "> |
| For information on how to use experimental APIs, see the <a href="experimental.html">chrome.experimental.* APIs</a> page. |
| </p> |
| |
| <!-- STATIC CONTENT PLACEHOLDER --> |
| <div id="static"><div id="pageData-name" class="pageData">Tutorial: Getting Started (Hello, World!)</div> |
| <div id="pageData-showTOC" class="pageData">true</div> |
| |
| <p> |
| This tutorial walks you through creating a simple extension. |
| You'll add an icon to Google Chrome |
| that, when clicked, displays an automatically generated page. |
| The icon and page will look something like this: |
| </p> |
| |
| <img src="images/hello-world-small.png" width="300" height="221" alt="a window with a grid of images related to HELLO WORLD"> |
| |
| <p> |
| You can develop extensions using any release of Google Chrome, |
| on Windows, Mac, or Linux. |
| </p> |
| |
| <h2 id="load">Create and load an extension</h2> |
| <p> |
| In this section, you'll write an extension |
| that adds a <em>browser action</em> |
| to the toolbar of Google Chrome. |
| </p> |
| |
| <ol> |
| <li> |
| Create a folder somewhere on your computer to contain your extension's code. |
| </li> |
| <li> |
| Inside your extension's folder, |
| create a text file called <strong><code>manifest.json</code></strong>, |
| and put this in it: |
| <pre>{ |
| "name": "My First Extension", |
| "version": "1.0", |
| "description": "The first extension that I made.", |
| "browser_action": { |
| "default_icon": "icon.png" |
| }, |
| "permissions": [ |
| "http://api.flickr.com/" |
| ] |
| }</pre> |
| </li> |
| <li> |
| Copy this icon to the same folder:<br> |
| <table cellpadding="0" cellspacing="0" style="border:0"> |
| <tbody><tr> |
| <td style="text-align:center; border:0;"><a href="examples/tutorials/getstarted/icon.png"><img src="examples/tutorials/getstarted/icon.png" width="19" height="19" border="0"></a><br> |
| <a href="examples/tutorials/getstarted/icon.png">Download icon.png</a></td> |
| </tr> |
| </tbody></table> |
| </li> |
| <li id="load-ext"> Load the extension. |
| <ol type="a"> |
| <li style="margin-top:0"> |
| Bring up the extensions management page |
| by clicking the wrench icon |
| <img src="images/toolsmenu.gif" width="29" height="29" alt="" style="margin-top:0"> |
| and choosing <b>Tools > Extensions</b>. |
| (On Mac, use <b>Window > Extensions</b>.) |
| </li> |
| |
| <li> |
| If <b>Developer mode</b> has a + by it, |
| click the + to add developer information to the page. |
| The + changes to a -, |
| and more buttons and information appear. |
| </li> |
| |
| <li> |
| Click the <b>Load unpacked extension</b> button. |
| A file dialog appears. |
| </li> |
| |
| <li> |
| In the file dialog, |
| navigate to your extension's folder |
| and click <b>OK</b>. |
| </li> |
| </ol> </li> |
| </ol> |
| |
| <p> |
| If your extension is valid, |
| its icon appears next to the address bar, |
| and information about the extension |
| appears in the extensions page, |
| as the following screenshot shows. |
| </p> |
| |
| <p> |
| <a href="images/load_after.png"><img src="images/load_after_small.png" width="300" height="132"></a> |
| </p> |
| |
| <h2 id="code">Add code to the extension</h2> |
| <p> In this step, you'll make your extension <em>do</em> something besides just look good. </p> |
| <ol> |
| <li> |
| <p> Edit <code>manifest.json</code> to add the following line:</p> |
| <pre> ... |
| "browser_action": { |
| "default_icon": "icon.png"<b>, |
| "popup": "popup.html"</b> |
| }, |
| ... |
| </pre> |
| <p> Inside your extension's folder, |
| create a text file called <strong><code>popup.html</code></strong>, |
| and add the following code to it:</p> |
| <blockquote> <a href="http://src.chromium.org/viewvc/chrome/trunk/src/chrome/common/extensions/docs/examples/tutorials/getstarted/popup.html?content-type=text/plain" target="_blank">CSS |
| and JavaScript code for hello_world</a></blockquote> |
| </li> |
| <li> |
| Return to the extensions management page, |
| and click the <b>Reload</b> button |
| to load the new version of the extension.</li> |
| <li>Click the extension's icon. |
| A popup should appear that displays the contents of |
| <code>popup.html</code>. </li> |
| </ol> |
| <p> It should look something like this:</p> |
| |
| <img src="images/hello-world.png" width="500" height="369" alt="a popup with a grid of images related to HELLO WORLD"> |
| |
| <p> If you don't see the popup, |
| try the instructions again, |
| following them exactly. |
| Don't try loading an HTML file that isn't in the extension's folder — |
| it won't work! </p> |
| |
| <h2 id="summary">Now what?</h2> |
| |
| <!-- [PENDING: Summarize what we did, what it means, what else we would've done if this were a real extension (e.g. package/zip it), and where to find more information.] --> |
| |
| <p> |
| Here are some suggestions for what to read next: |
| </p> |
| |
| <ul> |
| <li> |
| The <a href="overview.html">Overview</a>, |
| which has important conceptual and practical information |
| </li> |
| <li> |
| The |
| <a href="tut_debugging.html">debugging tutorial</a>, |
| which starts where this tutorial leaves off |
| </li> |
| <li> |
| The <a href="hosting.html">hosting</a> page, |
| which tells you about options for distributing your extension |
| </li> |
| </ul> |
| |
| <p> |
| If you don't feel like reading, try these: |
| </p> |
| <ul> |
| <li> |
| Keep up to date with the latest news: |
| <a href="http://groups.google.com/a/chromium.org/group/chromium-extensions/subscribe">subscribe to chromium-extensions</a> |
| </li> |
| <li> |
| Look at some |
| <a href="samples.html">sample extensions</a> |
| </li> |
| <li> |
| Watch some |
| <a href="http://www.youtube.com/view_play_list?p=CA101D6A85FE9D4B">videos</a>, such as |
| <a href="http://www.youtube.com/watch?v=e3McMaHvlBY&feature=PlayList&p=CA101D6A85FE9D4B&index=3">How to build an extension</a> |
| </li> |
| </ul> |
| </div> |
| |
| <!-- API PAGE --> |
| <div class="apiPage" style="display: none; "> |
| <a name="apiReference"></a> |
| <h2>API reference: chrome.apiname </h2> |
| |
| <!-- PROPERTIES --> |
| <div class="apiGroup"> |
| <a name="properties"></a> |
| <h3 id="properties">Properties</h3> |
| |
| <div> |
| <a></a> |
| <h4>getLastError</h4> |
| <div class="summary"> |
| <!-- Note: intentionally longer 80 columns --> |
| <span>chrome.extension</span><span>lastError</span> |
| </div> |
| <div> |
| </div> |
| </div> |
| |
| </div> <!-- /apiGroup --> |
| |
| <!-- METHODS --> |
| <div class="apiGroup" id="methods"> |
| <a name="methods"></a> |
| <h3>Methods</h3> |
| |
| <!-- iterates over all functions --> |
| <div class="apiItem"> |
| <a></a> <!-- method-anchor --> |
| <h4>method name</h4> |
| |
| <div class="summary"><span>void</span> |
| <!-- Note: intentionally longer 80 columns --> |
| <span>chrome.module.methodName</span>(<span><span>, </span><span></span> |
| <var><span></span></var></span>)</div> |
| |
| <div class="description"> |
| <p class="todo">Undocumented.</p> |
| <p> |
| A description from the json schema def of the function goes here. |
| </p> |
| |
| <!-- PARAMETERS --> |
| <h4>Parameters</h4> |
| <dl> |
| <div> |
| <div> |
| </div> |
| </div> |
| </dl> |
| |
| <!-- RETURNS --> |
| <h4>Returns</h4> |
| <dl> |
| <div> |
| <div> |
| </div> |
| </div> |
| </dl> |
| |
| <!-- CALLBACK --> |
| <div> |
| <div> |
| <h4>Callback function</h4> |
| <p> |
| The callback <em>parameter</em> should specify a function |
| that looks like this: |
| </p> |
| <p> |
| If you specify the <em>callback</em> parameter, it should |
| specify a function that looks like this: |
| </p> |
| |
| <!-- Note: intentionally longer 80 columns --> |
| <pre>function(<span>Type param1, Type param2</span>) <span class="subdued">{...}</span>;</pre> |
| <dl> |
| <div> |
| <div> |
| </div> |
| </div> |
| </dl> |
| </div> |
| </div> |
| |
| <!-- MIN_VERSION --> |
| <p> |
| This function was added in version <b><span></span></b>. |
| If you require this function, the manifest key |
| <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a> |
| can ensure that your extension won't be run in an earlier browser version. |
| </p> |
| </div> <!-- /description --> |
| |
| </div> <!-- /apiItem --> |
| |
| </div> <!-- /apiGroup --> |
| |
| <!-- EVENTS --> |
| <div class="apiGroup"> |
| <a name="events"></a> |
| <h3 id="events">Events</h3> |
| |
| <!-- iterates over all events --> |
| <div class="apiItem"> |
| <a></a> |
| <h4>event name</h4> |
| |
| <div class="summary"> |
| <!-- Note: intentionally longer 80 columns --> |
| <span class="subdued">chrome.bookmarks</span><span>onEvent</span><span class="subdued">.addListener</span>(function(<span>Type param1, Type param2</span>) <span class="subdued">{...}</span>); |
| </div> |
| |
| <div class="description"> |
| <p class="todo">Undocumented.</p> |
| <p> |
| A description from the json schema def of the event goes here. |
| </p> |
| |
| <!-- PARAMETERS --> |
| <h4>Parameters</h4> |
| <dl> |
| <div> |
| <div> |
| </div> |
| </div> |
| </dl> |
| |
| </div> <!-- /decription --> |
| |
| </div> <!-- /apiItem --> |
| |
| </div> <!-- /apiGroup --> |
| |
| <!-- TYPES --> |
| <div class="apiGroup"> |
| <a name="types"></a> |
| <h3 id="types">Types</h3> |
| |
| <!-- iterates over all types --> |
| <div class="apiItem"> |
| <a></a> |
| <h4>type name</h4> |
| |
| <div> |
| </div> |
| |
| </div> <!-- /apiItem --> |
| |
| </div> <!-- /apiGroup --> |
| |
| </div> <!-- /apiPage --> |
| </div> <!-- /gc-pagecontent --> |
| </div> <!-- /g-section --> |
| </div> <!-- /codesiteContent --> |
| <div id="gc-footer" --=""> |
| <div class="text"> |
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