OLD | NEW |
1 <table class="intro"> | 1 <table class="intro"> |
2 <tr> | 2 <tr> |
3 <th scope="col"></th> | 3 <th scope="col"></th> |
4 <th scope="col"></th> | 4 <th scope="col"></th> |
5 </tr> | 5 </tr> |
6 <tr> | 6 <tr> |
7 <td><strong>Description:</strong></td> | 7 <td><strong>Description:</strong></td> |
8 <td>Use the <code>chrome.alarms</code> module | 8 <td>Use the <code>chrome.alarms</code> module |
9 to schedule code to run periodically | 9 to schedule code to run periodically |
10 or at a specified time in the future.</td> | 10 or at a specified time in the future.</td> |
11 </tr> | 11 </tr> |
12 <tr> | 12 <tr> |
13 <td><strong>Availability:</strong></td> | 13 <td><strong>Availability:</strong></td> |
14 <td>Google Chrome 22</td> | 14 <td>Google Chrome 22</td> |
15 </tr> | 15 </tr> |
16 <tr> | 16 <tr> |
17 <td><strong>Permissions:</strong></td> | 17 <td><strong>Permissions:</strong></td> |
18 <td><code>"alarms"</code></td> | 18 <td><code>"alarms"</code></td> |
19 </tr> | 19 </tr> |
20 <tr> | 20 <tr> |
21 <td><strong>Learn more:</strong></td> | 21 <td><strong>Learn more:</strong></td> |
22 <td><a href="event_pages.html">Event Pages</a></td> | 22 <td><a href="event_pages.html">Event Pages</a></td> |
23 </tr> | 23 </tr> |
24 </table> | 24 </table> |
25 | |
26 <h2 id="frequency-limits">Alarm frequency limits</h2> | |
27 <p>In order to reduce the load on the user's machine, Chrome limits | |
28 alarms to at most once every 5 minutes but may delay them an arbitrary | |
29 amount more. That is, setting | |
30 <code>$ref:[alarms.AlarmCreateInfo.delayInMinutes | |
31 delayInMinutes]</code> or | |
32 <code>$ref:[alarms.AlarmCreateInfo.periodInMinutes | |
33 periodInMinutes]</code> to less than <code>5</code> will cause an | |
34 error. <code>$ref:[alarms.AlarmCreateInfo.when when]</code> can be | |
35 set to less than 5 minutes after "now" but won't actually cause the | |
36 alarm to run for at least 5 minutes.</p> | |
37 | |
38 <p>To help you debug your app or extension, when you've loaded it | |
39 unpacked, there's no limit to how often the alarm can fire.</p> | |
OLD | NEW |