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Issue 219213007: Remove .html extension from links (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 6 years, 7 months ago
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1 <h1>Frequently Asked Questions</h1> 1 <h1>Frequently Asked Questions</h1>
2 2
3 3
4 <!-- --> 4 <!-- -->
5 5
6 <p> 6 <p>
7 If you don't find an answer to your question here, 7 If you don't find an answer to your question here,
8 try the 8 try the
9 <a href="http://code.google.com/chrome/webstore/faq.html">Chrome Web Store FAQ</ a>, the 9 <a href="http://code.google.com/chrome/webstore/faq">Chrome Web Store FAQ</a>, t he
10 <a href="http://stackoverflow.com/questions/tagged/google-chrome-extension">[goo gle-chrome-extension] tag on Stack Overflow</a>, the 10 <a href="http://stackoverflow.com/questions/tagged/google-chrome-extension">[goo gle-chrome-extension] tag on Stack Overflow</a>, the
11 <a href="http://groups.google.com/a/chromium.org/group/chromium-extensions">grou p</a>, or the 11 <a href="http://groups.google.com/a/chromium.org/group/chromium-extensions">grou p</a>, or the
12 <a href="http://www.google.com/support/chrome_webstore/">store help</a>. 12 <a href="http://www.google.com/support/chrome_webstore/">store help</a>.
13 </p> 13 </p>
14 14
15 <div id="faq-TOC"> 15 <div id="faq-TOC">
16 <h4 id="general">General</h4> 16 <h4 id="general">General</h4>
17 <ul> 17 <ul>
18 <li><a href="#faq-gen-01">What are Google Chrome Extensions?</a></li> 18 <li><a href="#faq-gen-01">What are Google Chrome Extensions?</a></li>
19 {{^is_apps}} 19 {{^is_apps}}
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82 <p> 82 <p>
83 Click the Chrome menu icon 83 Click the Chrome menu icon
84 <img src="{{static}}/images/hotdogmenu.png" height="29" width="29" alt="" 84 <img src="{{static}}/images/hotdogmenu.png" height="29" width="29" alt=""
85 class="nomargin" /> 85 class="nomargin" />
86 and select <b>Extensions</b> from the <b>Tools</b> menu. 86 and select <b>Extensions</b> from the <b>Tools</b> menu.
87 Ensure that the "Developer mode" checkbox in the top right-hand corner 87 Ensure that the "Developer mode" checkbox in the top right-hand corner
88 is checked. 88 is checked.
89 Now you can reload extensions, 89 Now you can reload extensions,
90 load an unpacked directory of files as if it were a packaged extension, 90 load an unpacked directory of files as if it were a packaged extension,
91 and more. For a complete tutorial, see 91 and more. For a complete tutorial, see
92 <a href="/extensions/getstarted.html">Getting Started</a>. 92 <a href="/extensions/getstarted">Getting Started</a>.
93 </p> 93 </p>
94 {{/is_apps}} 94 {{/is_apps}}
95 95
96 <h3 id="faq-gen-02">What technologies are used to write extensions for Chrome?</ h3> 96 <h3 id="faq-gen-02">What technologies are used to write extensions for Chrome?</ h3>
97 <p> 97 <p>
98 Extensions are written using the same standard web 98 Extensions are written using the same standard web
99 technologies that developers use to create websites. HTML is used as a 99 technologies that developers use to create websites. HTML is used as a
100 content markup language, CSS is used for styling, and JavaScript for 100 content markup language, CSS is used for styling, and JavaScript for
101 scripting. Because Chrome supports HTML5 and CSS3, developers can 101 scripting. Because Chrome supports HTML5 and CSS3, developers can
102 use the latest open web technologies such as canvas and CSS animations in 102 use the latest open web technologies such as canvas and CSS animations in
103 their extensions. Extensions also have access to several 103 their extensions. Extensions also have access to several
104 <a href="/extensions/api_other.html">JavaScript APIs</a> 104 <a href="/extensions/api_other">JavaScript APIs</a>
105 that help perform functions like JSON encoding and interacting with the 105 that help perform functions like JSON encoding and interacting with the
106 browser. 106 browser.
107 </p> 107 </p>
108 108
109 109
110 <h3 id="faq-gen-03">Are extensions fetched from the web every time the browser i s loaded?</h3> 110 <h3 id="faq-gen-03">Are extensions fetched from the web every time the browser i s loaded?</h3>
111 <p> 111 <p>
112 Extensions are downloaded by the Chrome browser upon install, and 112 Extensions are downloaded by the Chrome browser upon install, and
113 are subsequently run off of the local disk in order to speed up 113 are subsequently run off of the local disk in order to speed up
114 performance. However, if a new version of the extension is pushed online, 114 performance. However, if a new version of the extension is pushed online,
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155 combination. The rest of the information is metadata about when the releases 155 combination. The rest of the information is metadata about when the releases
156 were first pushed, as well as revision numbers associated with each build. 156 were first pushed, as well as revision numbers associated with each build.
157 </p> 157 </p>
158 158
159 159
160 <h2 id="capabilities2">Capabilities</h2> 160 <h2 id="capabilities2">Capabilities</h2>
161 161
162 <h3 id="faq-dev-02">Can extensions make cross-domain Ajax requests?</h3> 162 <h3 id="faq-dev-02">Can extensions make cross-domain Ajax requests?</h3>
163 <p> 163 <p>
164 Yes. Extensions can make cross-domain requests. See 164 Yes. Extensions can make cross-domain requests. See
165 <a href="/extensions/xhr.html">this page</a> 165 <a href="/extensions/xhr">this page</a>
166 for more information. 166 for more information.
167 </p> 167 </p>
168 168
169 <h3 id="faq-dev-03">Can extensions use 3rd party web services?</h3> 169 <h3 id="faq-dev-03">Can extensions use 3rd party web services?</h3>
170 <p> 170 <p>
171 Yes. Extensions are capable of making cross-domain Ajax 171 Yes. Extensions are capable of making cross-domain Ajax
172 requests, so they can call remote APIs directly. APIs that provide data 172 requests, so they can call remote APIs directly. APIs that provide data
173 in JSON format are particularly easy to use. 173 in JSON format are particularly easy to use.
174 </p> 174 </p>
175 175
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196 <h3 id="faq-dev-04">Can extensions use OAuth?</h3> 196 <h3 id="faq-dev-04">Can extensions use OAuth?</h3>
197 <p> 197 <p>
198 Yes, there are extensions that use OAuth to access remote data 198 Yes, there are extensions that use OAuth to access remote data
199 APIs. Most developers find it convenient to use a 199 APIs. Most developers find it convenient to use a
200 <a href="http://unitedheroes.net/OAuthSimple/js/OAuthSimple.js">JavaScript OAu th library</a> 200 <a href="http://unitedheroes.net/OAuthSimple/js/OAuthSimple.js">JavaScript OAu th library</a>
201 in order to simplify the process of signing OAuth requests. 201 in order to simplify the process of signing OAuth requests.
202 </p> 202 </p>
203 203
204 <h3 id="faq-dev-06">Can extensions load DLLs?</h3> 204 <h3 id="faq-dev-06">Can extensions load DLLs?</h3>
205 <p> 205 <p>
206 Yes, using the <a href="npapi.html">NPAPI interface</a>. 206 Yes, using the <a href="npapi">NPAPI interface</a>.
207 Because of the possibility for abuse, though, we will review your extension 207 Because of the possibility for abuse, though, we will review your extension
208 before hosting it in the Chrome Web Store. 208 before hosting it in the Chrome Web Store.
209 </p> 209 </p>
210 210
211 <h3 id="faq-dev-05">Can extensions create UI outside of the rendered web page?</ h3> 211 <h3 id="faq-dev-05">Can extensions create UI outside of the rendered web page?</ h3>
212 <p> 212 <p>
213 Yes, your extension may add buttons to the Chrome browser's user interface. 213 Yes, your extension may add buttons to the Chrome browser's user interface.
214 See <a href="browserAction.html">browser actions</a> and 214 See <a href="browserAction">browser actions</a> and
215 <a href="pageAction.html">page actions</a> for more information. 215 <a href="pageAction">page actions</a> for more information.
216 </p> 216 </p>
217 <p> 217 <p>
218 An extension may also create popup notifications, which exist outside of the 218 An extension may also create popup notifications, which exist outside of the
219 browser window. See the <a href="desktop_notifications.html">desktop 219 browser window. See the <a href="desktop_notifications">desktop
220 notifications</a> documentation for more details. 220 notifications</a> documentation for more details.
221 </p> 221 </p>
222 222
223 <h3 id="faq-interact-chrome">Can extensions listen to clicks on Chrome tabs and 223 <h3 id="faq-interact-chrome">Can extensions listen to clicks on Chrome tabs and
224 navigation buttons?</h3> 224 navigation buttons?</h3>
225 <p> 225 <p>
226 No. Extensions are limited to listening to the events described in the <a 226 No. Extensions are limited to listening to the events described in the <a
227 href="api_index.html">API documentation</a>. 227 href="api_index">API documentation</a>.
228 </p> 228 </p>
229 229
230 <h3 id="faq-dev-11">Can two extensions communicate with each other?</h3> 230 <h3 id="faq-dev-11">Can two extensions communicate with each other?</h3>
231 <p> 231 <p>
232 Yes, extensions may pass messages to other extensions. See the 232 Yes, extensions may pass messages to other extensions. See the
233 <a href="messaging.html#external">message passing documentation</a> 233 <a href="messaging#external">message passing documentation</a>
234 for more information. 234 for more information.
235 </p> 235 </p>
236 236
237 {{^is_apps}} 237 {{^is_apps}}
238 <h3 id="faq-dev-13">Can extensions use Google Analytics?</h3> 238 <h3 id="faq-dev-13">Can extensions use Google Analytics?</h3>
239 <p> 239 <p>
240 Yes, since extensions are built just like websites, they can use 240 Yes, since extensions are built just like websites, they can use
241 <a href="http://www.google.com/analytics/">Google Analytics</a> to track 241 <a href="http://www.google.com/analytics/">Google Analytics</a> to track
242 usage. However, you must modify the tracking code to pull 242 usage. However, you must modify the tracking code to pull
243 an HTTPS version of the Google Analytics library. See 243 an HTTPS version of the Google Analytics library. See
244 <a href="tut_analytics.html">this tutorial</a> for more information on doing 244 <a href="tut_analytics">this tutorial</a> for more information on doing
245 this. 245 this.
246 </p> 246 </p>
247 {{/is_apps}} 247 {{/is_apps}}
248 248
249 {{^is_apps}} 249 {{^is_apps}}
250 <h3 id="faq-dev-15">Can extensions modify chrome:// URLs?</h3> 250 <h3 id="faq-dev-15">Can extensions modify chrome:// URLs?</h3>
251 <p> 251 <p>
252 No. The extensions APIs have been designed to minimize backwards 252 No. The extensions APIs have been designed to minimize backwards
253 compatibility issues that can arise when new versions of the browser are 253 compatibility issues that can arise when new versions of the browser are
254 pushed. Allowing content scripts on <code>chrome://</code> 254 pushed. Allowing content scripts on <code>chrome://</code>
255 URLs would mean that developers would begin to rely on the DOM, CSS, and 255 URLs would mean that developers would begin to rely on the DOM, CSS, and
256 JavaScript of these pages to stay the same. In the best case, these pages 256 JavaScript of these pages to stay the same. In the best case, these pages
257 could not be updated as quickly as they are being updated right now. 257 could not be updated as quickly as they are being updated right now.
258 In the worst case, it could mean that an update to one 258 In the worst case, it could mean that an update to one
259 of these pages could cause an extension to break, causing key parts of the 259 of these pages could cause an extension to break, causing key parts of the
260 browser to stop working for users of that extension. 260 browser to stop working for users of that extension.
261 </p> 261 </p>
262 262
263 <p> 263 <p>
264 The reason that <a href="override.html">replacing the content</a> 264 The reason that <a href="override">replacing the content</a>
265 hosted at these URLs entirely is 265 hosted at these URLs entirely is
266 allowed is because it forces an extension developer to implement all of the 266 allowed is because it forces an extension developer to implement all of the
267 functionality they want without depending on the browser's internal implementa tion 267 functionality they want without depending on the browser's internal implementa tion
268 to stay the same. 268 to stay the same.
269 </p> 269 </p>
270 {{/is_apps}} 270 {{/is_apps}}
271 271
272 <h3 id="faq-open-popups">Can extensions open browser/page action popups without 272 <h3 id="faq-open-popups">Can extensions open browser/page action popups without
273 user interaction?</h3> 273 user interaction?</h3>
274 <p> 274 <p>
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308 308
309 <h3 id="faq-dev-09">How much data can I store in localStorage?</h3> 309 <h3 id="faq-dev-09">How much data can I store in localStorage?</h3>
310 <p> 310 <p>
311 Extensions can store up to 5MB of data in localStorage. 311 Extensions can store up to 5MB of data in localStorage.
312 </p> 312 </p>
313 313
314 {{^is_apps}} 314 {{^is_apps}}
315 <h3 id="faq-dev-10">How do I create an options menu for my application?</h3> 315 <h3 id="faq-dev-10">How do I create an options menu for my application?</h3>
316 <p> 316 <p>
317 You can let users set options for your extension by creating an 317 You can let users set options for your extension by creating an
318 <a href="/extensions/options.html">options page</a>, 318 <a href="/extensions/options">options page</a>,
319 which is a simple HTML page that will be loaded when a user clicks the 319 which is a simple HTML page that will be loaded when a user clicks the
320 "options" button for your extension. This page can read and write settings 320 "options" button for your extension. This page can read and write settings
321 to localStorage, or even send options to a web server so that they can be 321 to localStorage, or even send options to a web server so that they can be
322 persisted across browsers. 322 persisted across browsers.
323 </p> 323 </p>
324 {{/is_apps}} 324 {{/is_apps}}
325 325
326 <h3 id="faq-dev-12">What debugging tools are available to extension developers?< /h3> 326 <h3 id="faq-dev-12">What debugging tools are available to extension developers?< /h3>
327 <p> 327 <p>
328 Chrome's built-in developer tools can be used to debug extensions 328 Chrome's built-in developer tools can be used to debug extensions
329 as well as web pages. See this 329 as well as web pages. See this
330 <a href="/extensions/tut_debugging.html ">tutorial on debugging extensions</a> 330 <a href="/extensions/tut_debugging ">tutorial on debugging extensions</a>
331 for more information. 331 for more information.
332 </p> 332 </p>
333 333
334 <h3 id="faq-dev-16">Why do wildcard matches not work for top level domains 334 <h3 id="faq-dev-16">Why do wildcard matches not work for top level domains
335 (TLDs)?</h3> 335 (TLDs)?</h3>
336 <p> 336 <p>
337 You cannot use wildcard match patterns like <code>http://google.*/*</code> 337 You cannot use wildcard match patterns like <code>http://google.*/*</code>
338 to match TLDs (like <code>http://google.es</code> and 338 to match TLDs (like <code>http://google.es</code> and
339 <code>http://google.fr</code>) due to the 339 <code>http://google.fr</code>) due to the
340 complexity of actually restricting such a match to only the desired domains. 340 complexity of actually restricting such a match to only the desired domains.
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351 privileges. 351 privileges.
352 </p> 352 </p>
353 <p> 353 <p>
354 You should explicitly enumerate the TLDs that you wish to run 354 You should explicitly enumerate the TLDs that you wish to run
355 your extension on. 355 your extension on.
356 </p> 356 </p>
357 357
358 <h3 id="faq-management">Why does the management API not fire events when my 358 <h3 id="faq-management">Why does the management API not fire events when my
359 extension is installed/uninstalled?</h3> 359 extension is installed/uninstalled?</h3>
360 <p> 360 <p>
361 The <a href="management.html">management API</a> was intended to help create 361 The <a href="management">management API</a> was intended to help create
362 new tab page replacement extensions. It was not intended to fire 362 new tab page replacement extensions. It was not intended to fire
363 install/uninstall events for the current extension. 363 install/uninstall events for the current extension.
364 </p> 364 </p>
365 365
366 <h3 id="faq-firstrun">How can an extension determine whether it is running for 366 <h3 id="faq-firstrun">How can an extension determine whether it is running for
367 the first time?</h3> 367 the first time?</h3>
368 <p> 368 <p>
369 You can listen to the 369 You can listen to the
370 $(ref:runtime.onInstalled) 370 $(ref:runtime.onInstalled)
371 event. See <a href="#faq-lifecycle-events">this FAQ entry</a>. 371 event. See <a href="#faq-lifecycle-events">this FAQ entry</a>.
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482 <a href="http://groups.google.com/a/chromium.org/group/chromium-extensions/t opics"> 482 <a href="http://groups.google.com/a/chromium.org/group/chromium-extensions/t opics">
483 discussion group</a> with a link back to your request. 483 discussion group</a> with a link back to your request.
484 </li> 484 </li>
485 <li> 485 <li>
486 If you originally reported your request on the discussion group and were 486 If you originally reported your request on the discussion group and were
487 directed to this FAQ entry, reply to your original thread with a link 487 directed to this FAQ entry, reply to your original thread with a link
488 to the ticket you starred or opened. This will make it easier for others 488 to the ticket you starred or opened. This will make it easier for others
489 with the same request to find the correct ticket. 489 with the same request to find the correct ticket.
490 </li> 490 </li>
491 </ol> 491 </ol>
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