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author | MDN <actions@users.noreply.github.com> | 2021-08-26 00:43:36 +0000 |
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committer | MDN <actions@users.noreply.github.com> | 2021-08-26 00:43:36 +0000 |
commit | 5e843574fde6fda12f3db3d4fe864d324ff8bbfd (patch) | |
tree | d1f2410b7fd311ef9bc5f3610d87998f48c73fe0 /files/zh-cn/conflicting/web/api/headers/get/index.html | |
parent | 92e0d7a5eb47d3af6c4d07b4b931c3d468e041fb (diff) | |
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[CRON] sync translated content
Diffstat (limited to 'files/zh-cn/conflicting/web/api/headers/get/index.html')
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diff --git a/files/zh-cn/conflicting/web/api/headers/get/index.html b/files/zh-cn/conflicting/web/api/headers/get/index.html new file mode 100644 index 0000000000..c4b5464f68 --- /dev/null +++ b/files/zh-cn/conflicting/web/api/headers/get/index.html @@ -0,0 +1,135 @@ +--- +title: Headers.getAll() +slug: conflicting/Web/API/Headers/get +translation_of: Web/API/Headers/getAll +original_slug: Web/API/Headers/getAll +--- +<p>{{APIRef("Fetch")}}{{ SeeCompatTable() }}</p> + +<p><strong><code>getAll()</code></strong> 方法会以数组形式返回指定header的所有值. 如果指定的header未存在,则返回一个空数组.</p> + +<div class="note"> +<p><strong>Note:</strong>出于安全原因, 部分头信息只能被用户代理控制. 这些头信息包括 {{Glossary("Forbidden_header_name", "forbidden header names", 1)}} 和 {{Glossary("Forbidden_response_header_name", "forbidden response header names", 1)}}.</p> +</div> + +<h2 id="Syntax">Syntax</h2> + +<pre class="brush: js">myHeaders.getAll(name);</pre> + +<h3 id="Parameters">Parameters</h3> + +<dl> + <dt><em>name</em></dt> + <dd>需检索的HTTP header名称. 如果HTTP header中不存在指定名称<span style="line-height: 19.0909080505371px;">则抛出一个 </span><span style="line-height: 19.0909080505371px;">{{jsxref("TypeError")}}.</span></dd> +</dl> + +<h3 id="Returns">Returns</h3> + +<p>An {{domxref("Array")}} containing a {{domxref("ByteString")}} sequence representing the values of the retrieved header.</p> + +<h2 id="Example">Example</h2> + +<p>Creating an empty <code>Headers</code> object is simple:</p> + +<pre class="brush: js">var myHeaders = new Headers(); // Currently empty</pre> + +<p>You could add a header to this using {{domxref("Headers.append")}}, then retrieve it using <code>getAll()</code>:</p> + +<pre class="brush: js">myHeaders.append('Content-Type', 'image/jpeg'); +myHeaders.getAll('Content-Type'); // Returns [ "image/jpeg" ] +</pre> + +<p>If the header has multiple values associated with it, the array will contain all the values, in the order they were added to the Headers object:</p> + +<pre class="brush: js">myHeaders.append('Accept-Encoding', 'deflate'); +myHeaders.append('Accept-Encoding', 'gzip'); +myHeaders.getAll('Accept-Encoding'); // Returns [ "deflate", "gzip" ]</pre> + +<div class="note"> +<p><strong>Note</strong>: Use {{domxref("Headers.get")}} to return only the first value added to the <code>Headers</code> object.</p> +</div> + +<h2 id="Specifications">Specifications</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">Specification</th> + <th scope="col">Status</th> + <th scope="col">Comment</th> + </tr> + <tr> + <td>{{SpecName('Fetch','#dom-headers-getall','getAll()')}}</td> + <td>{{Spec2('Fetch')}}</td> + <td> </td> + </tr> + </tbody> +</table> + +<h2 id="Browser_compatibility">Browser compatibility</h2> + +<p>{{ CompatibilityTable() }}</p> + +<div id="compat-desktop"> +<table class="compat-table"> + <tbody> + <tr> + <th>Feature</th> + <th>Chrome</th> + <th>Firefox (Gecko)</th> + <th>Internet Explorer</th> + <th>Opera</th> + <th>Safari (WebKit)</th> + </tr> + <tr> + <td>Basic support</td> + <td>{{ CompatChrome(42) }}<br> + {{ CompatChrome(41) }} behind pref<br> + </td> + <td>{{ CompatGeckoDesktop(39)}}<br> + 34 behind pref</td> + <td>{{ CompatNo }}</td> + <td> + <p>29<br> + 28 behind pref</p> + </td> + <td>{{ CompatNo }}</td> + </tr> + </tbody> +</table> +</div> + +<div id="compat-mobile"> +<table class="compat-table"> + <tbody> + <tr> + <th>Feature</th> + <th>Android</th> + <th>Firefox Mobile (Gecko)</th> + <th>Firefox OS (Gecko)</th> + <th>IE Phone</th> + <th>Opera Mobile</th> + <th>Safari Mobile</th> + <th>Chrome for Android</th> + </tr> + <tr> + <td>Basic support</td> + <td>{{ CompatNo }}</td> + <td>{{ CompatNo }}</td> + <td>{{ CompatNo }}</td> + <td>{{ CompatNo }}</td> + <td>{{ CompatNo }}</td> + <td>{{ CompatNo }}</td> + <td>{{ CompatNo }}</td> + </tr> + </tbody> +</table> +</div> + +<h2 id="See_also">See also</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> |