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+---
+title: HTMLCanvasElement.transferControlToOffscreen()
+slug: Web/API/HTMLCanvasElement/transferControlToOffscreen
+tags:
+  - Canvas
+  - Web图形技术
+  - 离屏Canvas
+translation_of: Web/API/HTMLCanvasElement/transferControlToOffscreen
+---
+<div>{{APIRef("Canvas API")}} {{SeeCompatTable}}</div>
+
+<p>方法 <code><strong>HTMLCanvasElement</strong></code><strong><code>.transferControlToOffscreen()</code></strong> 将控制转移到一个在主线程或者web worker的 {{domxref("OffscreenCanvas")}} 对象上。</p>
+
+<h2 id="用法">用法</h2>
+
+<pre class="syntaxbox notranslate">OffscreenCanvas HTMLCanvasElement.transferControlToOffscreen()</pre>
+
+<h3 id="返回值">返回值</h3>
+
+<p>一个 {{domxref("OffscreenCanvas")}} 对象。</p>
+
+<h2 id="样例">样例</h2>
+
+<pre class="brush: js notranslate">var htmlCanvas = document.createElement('canvas');
+var offscreen = htmlCanvas.transferControlToOffscreen();
+var gl = offscreen.getContext('webgl');
+
+// ... some drawing using the gl context ...
+
+// Push frames back to the original HTMLCanvasElement
+gl.commit();
+</pre>
+
+<h2 id="规范">规范</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('HTML WHATWG', "canvas.html#dom-canvas-transfercontroltooffscreen", "HTMLCanvasElement.transferControlToOffscreen()")}}</td>
+   <td>{{Spec2('HTML WHATWG')}}</td>
+   <td></td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+<div>
+
+
+<p>{{Compat("api.HTMLCanvasElement.transferControlToOffscreen")}}</p>
+</div>
+
+<h2 id="查阅">查阅</h2>
+
+<ul>
+ <li>The interface defining this method, {{domxref("HTMLCanvasElement")}}</li>
+ <li>{{domxref("OffscreenCanvas")}}</li>
+ <li>{{domxref("WebGLRenderingContext.commit()")}}</li>
+</ul>