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authorMDN <actions@users.noreply.github.com>2021-07-01 00:37:12 +0000
committerMDN <actions@users.noreply.github.com>2021-07-01 00:37:12 +0000
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+---
+title: Body
+slug: orphaned/Web/API/Body
+tags:
+ - API
+ - BODY
+ - Experimental
+ - Fetch
+ - Fetch API
+ - Interface
+ - NeedsTranslation
+ - Reference
+ - TopicStub
+ - request
+translation_of: Web/API/Body
+original_slug: Web/API/Body
+---
+<div>{{ APIRef("Fetch") }}</div>
+
+<p><span class="seoSummary">The <strong><code>Body</code></strong> {{glossary("mixin")}} of the <a href="/en-US/docs/Web/API/Fetch_API">Fetch API</a> represents the body of the response/request, allowing you to declare what its content type is and how it should be handled.</span></p>
+
+<p><code>Body</code> is implemented by both {{domxref("Request")}} and {{domxref("Response")}}. This provides these objects with an associated <dfn>body</dfn> (a <a href="/en-US/docs/Web/API/Streams_API">stream</a>), a <dfn>used flag</dfn> (initially unset), and a <dfn>MIME type</dfn> (initially the empty byte sequence).</p>
+
+<h2 id="Properties">Properties</h2>
+
+<dl>
+ <dt>{{domxref("Body.body")}} {{readonlyInline}}</dt>
+ <dd>A simple getter used to expose a {{domxref("ReadableStream")}} of the body contents.</dd>
+ <dt>{{domxref("Body.bodyUsed")}} {{readonlyInline}}</dt>
+ <dd>A {{domxref("Boolean")}} that indicates whether the body has been read.</dd>
+</dl>
+
+<h2 id="Methods">Methods</h2>
+
+<dl>
+ <dt>{{domxref("Body.arrayBuffer()")}}</dt>
+ <dd>Takes a {{domxref("Response")}} stream and reads it to completion. It returns a promise that resolves with an {{domxref("ArrayBuffer")}}.</dd>
+ <dt>{{domxref("Body.blob()")}}</dt>
+ <dd>Takes a {{domxref("Response")}} stream and reads it to completion. It returns a promise that resolves with a {{domxref("Blob")}}.</dd>
+ <dt>{{domxref("Body.formData()")}}</dt>
+ <dd>Takes a {{domxref("Response")}} stream and reads it to completion. It returns a promise that resolves with a {{domxref("FormData")}} object.</dd>
+ <dt>{{domxref("Body.json()")}}</dt>
+ <dd>Takes a {{domxref("Response")}} stream and reads it to completion. It returns a promise that resolves with the result of parsing the body text as {{jsxref("JSON")}}.</dd>
+ <dt>{{domxref("Body.text()")}}</dt>
+ <dd>Takes a {{domxref("Response")}} stream and reads it to completion. It returns a promise that resolves with a {{domxref("USVString")}} (text). The response is <em>always</em> decoded using UTF-8.</dd>
+</dl>
+
+<h2 id="Examples">Examples</h2>
+
+<p>The example below uses a simple fetch call to grab an image and display it in an {{htmlelement("img")}} tag. You'll notice that since we are requesting an image, we need to run {{domxref("Body.blob","Body.blob()")}} ({{domxref("Response")}} implements body) to give the response its correct MIME type.</p>
+
+<h3 id="HTML_Content">HTML Content</h3>
+
+<pre class="brush: html">&lt;img class="my-image" src="https://wikipedia.org/static/images/project-logos/frwiki-1.5x.png"&gt;
+</pre>
+
+<h3 id="JS_Content">JS Content</h3>
+
+<pre class="brush: js">var myImage = document.querySelector('.my-image');
+fetch('https://upload.wikimedia.org/wikipedia/commons/7/77/Delete_key1.jpg')
+ .then(res =&gt; res.blob())
+ .then(res =&gt; {
+ var objectURL = URL.createObjectURL(res);
+ myImage.src = objectURL;
+});</pre>
+
+<p>{{ EmbedLiveSample('Examples', '100%', '250px') }}</p>
+
+<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','#body-mixin','Body')}}</td>
+ <td>{{Spec2('Fetch')}}</td>
+ <td> </td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility">Browser compatibility</h2>
+
+
+
+<p>{{Compat("api.Body")}}</p>
+
+<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>
+
+<p> </p>
diff --git a/files/zh-tw/orphaned/web/api/body/json/index.html b/files/zh-tw/orphaned/web/api/body/json/index.html
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index 0000000000..44d12f70fa
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+---
+title: Body.json()
+slug: orphaned/Web/API/Body/json
+translation_of: Web/API/Body/json
+original_slug: Web/API/Body/json
+---
+<div>{{APIRef("Fetch")}}</div>
+
+<p>{{domxref("Body")}} mixin 的 <strong><code>json()</code></strong> 會拿 {{domxref("Response")}} stream 並完整地讀取他。它會回傳一個能夠實現 (resolve) 把回傳的結果的 body text 解析成 {{jsxref("JSON")}} 型別的 Promise。</p>
+
+<h2 id="語法">語法</h2>
+
+<pre class="brush: js notranslate">response.json().then(function(data) {
+ // do something with your data
+});</pre>
+
+<h3 id="參數">參數</h3>
+
+<p>None.</p>
+
+<h3 id="回傳">回傳</h3>
+
+<p>一個能夠實現 (resolve) 把回傳的結果的 body text 解析成 JSON 型別的 Promise。這可以是任何能夠被 JSON 呈現的資料型別 — 物件 (object), 陣列 (array), 字串 (string), 數字 (number)...</p>
+
+<h2 id="範例">範例</h2>
+
+<p>在我們的範例 <a href="https://github.com/mdn/fetch-examples/tree/master/fetch-json">fetch json example</a> (run <a href="http://mdn.github.io/fetch-examples/fetch-json/">fetch json live</a>) 中,我們用 constructor {{domxref("Request.Request")}} 產生一個新的請求,並且用它去取回 <code>.json</code> 檔案。 當成功取回 (fetch) 時,我們使用 <code>json()</code> 去讀取跟解析資料,然後依照我們期待的把回傳的結果物件 (resulting objects) 裡讀取到的數值存入 list 中藉以顯示我們的產品資料。</p>
+
+<pre class="brush: js notranslate">var myList = document.querySelector('ul');
+
+var myRequest = new Request('products.json');
+
+fetch(myRequest)
+ .then(function(response) { return response.json(); })
+ .then(function(data) {
+ for (var i = 0; i &lt; data.products.length; i++) {
+ var listItem = document.createElement('li');
+ listItem.innerHTML = '&lt;strong&gt;' + data.products[i].Name + '&lt;/strong&gt; can be found in ' +
+ data.products[i].Location +
+ '. Cost: &lt;strong&gt;£' + data.products[i].Price + '&lt;/strong&gt;';
+ myList.appendChild(listItem);
+ }
+ });</pre>
+
+<h2 id="規範">規範</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-body-json','json()')}}</td>
+ <td>{{Spec2('Fetch')}}</td>
+ <td></td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="瀏覽器相容性">瀏覽器相容性</h2>
+
+
+
+<p>{{Compat("api.Body.json")}}</p>
+
+<h2 id="參見">參見</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>