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+---
+title: SharedArrayBuffer.prototype
+slug: Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer/prototype
+tags:
+  - Prototype
+  - SharedArrayBuffer
+translation_of: Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer
+translation_of_original: Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer/prototype
+---
+<div>{{JSRef}}</div>
+
+<p><strong><code>SharedArrayBuffer.prototype</code></strong>  属性表示 {{jsxref("SharedArrayBuffer")}}  对象的原型。</p>
+
+<div>{{js_property_attributes(0,0,0)}}</div>
+
+<h2 id="描述">描述</h2>
+
+<p><code>SharedArrayBuffer</code>实例继承自<code>SharedArrayBuffer.prototype</code>。 与所有构造函数一样，您可以更改构造函数的原型对象以对所有<code>SharedArrayBuffer</code>实例进行更改。</p>
+
+<h2 id="属性">属性</h2>
+
+<dl>
+ <dt>SharedArrayBuffer.prototype.constructor</dt>
+ <dd>指定创建对象原型的函数。 初始值为标准的内置<code>SharedArrayBuffer</code>构造函数。</dd>
+ <dt>{{jsxref("SharedArrayBuffer.prototype.byteLength")}} {{readonlyInline}}</dt>
+ <dd>数组的大小（以字节为单位）。 这是在数组初始化时建立的，并且无法被更改。<strong> 只读</strong>。</dd>
+</dl>
+
+<h2 id="方法">方法</h2>
+
+<dl>
+ <dt>{{jsxref("SharedArrayBuffer.slice", "SharedArrayBuffer.prototype.slice(begin, end)")}}</dt>
+ <dd>返回一个新的<code>SharedArrayBuffer</code>，其内容是此<code>SharedArrayBuffer</code>字节从<code>beigin</code>开始（包括<code>begin</code>）到<code>end</code>结束（不包括<code>end</code>）的副本。 如果<code>begin</code>或<code>end</code>为负，则它是指数组末尾的索引，而不是开头的索引。</dd>
+</dl>
+
+<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('ESDraft', '#sec-sharedarraybuffer.prototype', 'SharedArrayBuffer.prototype')}}</td>
+   <td>{{Spec2('ESDraft')}}</td>
+   <td>Initial definition in ES2017.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+
+
+<p>{{Compat("javascript.builtins.SharedArrayBuffer.prototype")}}</p>
+
+<h2 id="相关链接">相关链接</h2>
+
+<ul>
+ <li>{{jsxref("SharedArrayBuffer")}}</li>
+</ul>