blob: 202367fba6d17fc83f6eb39c8bb99e6dd3ebc2d7 (
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
|
---
title: Request.context
slug: orphaned/Web/API/Request/context
translation_of: Web/API/Request/context
original_slug: Web/API/Request/context
---
<div>{{APIRef("Fetch")}}{{deprecated_header()}}</div>
<p><span class="seoSummary">The deprecated </span><font><font>弃用</font></font><strong><code>context</code></strong><font><font>所述的只读属性{{domxref("请求")}}接口包含请求的上下文（例如，</font></font><code>audio</code><font><font>，</font></font><code>image</code><font><font>，</font></font><code>iframe</code><font><font>）。</font></font><font><font>这定义了要获取的资源类型。</font><font>它已由{{domxref("Request.destination”，“ destination")}}属性取代。</font></font> This defines what sort of resource is being fetched. This has been replaced by the {{domxref("Request.destination", "destination")}} property.</p>
<p>The context of a request is only relevant in the <font><font>请求的上下文仅与</font></font><a href="https://wiki.developer.mozilla.org/en-US/docs/Web/API/ServiceWorker_API"><font><font>ServiceWorker API</font></font></a><font><font>相关</font><font>；</font><font>服务人员可以根据URL是用于图像还是可嵌入对象（例如{{htmlelement("视频")}}，{{domxref("iframe")}}等）进行决策。</font></font>; a service worker can make decisions based on whether the URL is for an image, or an embeddable object such as a {{htmlelement("video")}}, {{domxref("iframe")}}, etc.</p>
<div class="note">
<p><strong>Note<font><font>注意</font></font></strong><font><font>：您可以在“ </font></font><a href="https://fetch.spec.whatwg.org/#concept-request-context"><font><font>获取规范请求上下文”</font></font></a><font><font>部分中</font><font>找到不同可用上下文的完整列表，包括关联的上下文框架类型，CSP指令和平台功能示例</font><font>。</font></font> section.</p>
</div>
<h2 id="Syntax">Syntax</h2>
<pre class="syntaxbox notranslate">var <var>myContext</var> = <var>request</var>.context;</pre>
<h3 id="Value">Value</h3>
<p>A {{domxref("RequestContext")}} value.一个{{domxref("RequestContext")}}值。</p>
<h2 id="Example例子">Example<font><font>例子</font></font></h2>
<p>In the following snippet, we create a new request using the {{domxref("Request.Request()")}} constructor (for an image file in the same directory as the script), then save the request context in a variable:在以下代码段中，我们使用{{domxref("Request.Request（）")}}}构造函数创建一个新请求（用于与脚本位于同一目录中的图像文件），然后将请求上下文保存在变量中：</p>
<pre class="brush: js notranslate">var myRequest = new Request('flowers.jpg');
var myContext = myRequest.context; // returns the empty string by default</pre>
<h2 id="Browser_compatibility浏览器兼容性">Browser compatibility<font><font>浏览器兼容性</font></font></h2>
<div class="hidden">The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out <font><font>此页面上的兼容性表是根据结构化数据生成的。</font><font>如果您想提供数据，请查看</font></font><a href="https://github.com/mdn/browser-compat-data"><font><font>https://github.com/mdn/browser-compat-data</font></font></a><font><font>并向我们发送请求请求。</font></font> and send us a pull request.</div>
<p>{{Compat("api.Request.context")}}</p>
<h2 id="更多">更多</h2>
<ul>
<li><a href="/en-US/docs/Web/API/ServiceWorker_API">ServiceWorker API</a></li>
<li><a href="/en-US/docs/Web/HTTP/Access_control_CORS">HTTP access control (CORS)</a></li>
<li><a href="/en-US/docs/Web/HTTP">HTTP</a></li>
</ul>
|
