aboutsummaryrefslogtreecommitdiff
path: root/files/zh-cn/web/api/window/online_event/index.html
blob: ecaccec4f79c8aa990b81bc6dac6554e51a6622b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
---
title: online
slug: Web/API/Window/online_event
translation_of: Web/API/Window/online_event
---
<p>当浏览器能够访问网络, 并且<code>navigator.online</code>的值被设为<code>true</code>时, <code>online</code>事件被触发.</p>

<div class="note"><strong>注意:</strong> 该事件不能用来决定某个网站可否访问.网站自身问题或防火墙或GFW都依然有可能阻止该网站的访问.</div>

<h2 id="常规信息">常规信息</h2>

<dl>
 <dt style="float: left; text-align: right; width: 120px;">规范</dt>
 <dd style="margin: 0 0 0 120px;"><a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/offline.html#event-online">HTML5 Offline</a></dd>
 <dt style="float: left; text-align: right; width: 120px;">接口</dt>
 <dd style="margin: 0 0 0 120px;">Event</dd>
 <dt style="float: left; text-align: right; width: 120px;">是否冒泡</dt>
 <dd style="margin: 0 0 0 120px;"></dd>
 <dt style="float: left; text-align: right; width: 120px;">可取消默认行为</dt>
 <dd style="margin: 0 0 0 120px;"></dd>
 <dt style="float: left; text-align: right; width: 120px;">目标对象</dt>
 <dd style="margin: 0 0 0 120px;">当前网页(<code>&lt;window&gt;</code>)</dd>
 <dt style="float: left; text-align: right; width: 120px;">默认行为</dt>
 <dd style="margin: 0 0 0 120px;"></dd>
</dl>

<h2 id="属性">属性</h2>

<table class="standard-table">
 <thead>
<tr>
   <th scope="col">属性</th>
   <th scope="col">类型</th>
   <th scope="col">描述</th>
  </tr>
 </thead>
 <tbody>
  <tr>
   <td><code>target</code> {{readonlyInline}}</td>
   <td>{{domxref("EventTarget")}}</td>
   <td>产生该事件的对象(DOM树中最顶级的那个对象).</td>
  </tr>
  <tr>
   <td><code>type</code> {{readonlyInline}}</td>
   <td>{{domxref("DOMString")}}</td>
   <td>事件类型.</td>
  </tr>
  <tr>
   <td><code>bubbles</code> {{readonlyInline}}</td>
   <td>{{jsxref("Boolean")}}</td>
   <td>该事件是否冒泡.</td>
  </tr>
  <tr>
   <td><code>cancelable</code> {{readonlyInline}}</td>
   <td>{{jsxref("Boolean")}}</td>
   <td>该事件是否可取消默认行为.</td>
  </tr>
 </tbody>
</table>

<h2 id="相关事件">相关事件</h2>

<ul>
 <li><a href="/en-US/docs/Mozilla_event_reference/offline"><code>offline</code></a></li>
</ul>