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---
title: ArrayBuffer.prototype
slug: Web/JavaScript/Reference/Global_Objects/ArrayBuffer/prototype
translation_of: Web/JavaScript/Reference/Global_Objects/ArrayBuffer
translation_of_original: Web/JavaScript/Reference/Global_Objects/ArrayBuffer/prototype
---
<div>{{JSRef}}</div>
<p>The <strong><code>ArrayBuffer.prototype</code></strong> property represents the prototype for the {{jsxref("ArrayBuffer")}} object.</p>
<div>{{js_property_attributes(0,0,0)}}</div>
<h2 id="描述">描述</h2>
<p><code>ArrayBuffer</code> instances inherit from <code>ArrayBuffer.prototype</code>. As with all constructors, you can change the constructor's prototype object to make changes to all <code>ArrayBuffer</code> instances.</p>
<h2 id="屬性">屬性</h2>
<dl>
<dt>ArrayBuffer.prototype.constructor</dt>
<dd>Specifies the function that creates an object's prototype. The initial value is the standard built-in <code>ArrayBuffer</code> constructor.</dd>
<dt>{{jsxref("ArrayBuffer.prototype.byteLength")}} {{readonlyInline}}</dt>
<dd>陣列大小，以位元組（byte）計算。此屬性在陣列建立之後就不可能改變了。<strong>唯讀</strong>。</dd>
</dl>
<h2 id="方法">方法</h2>
<dl>
<dt>{{jsxref("ArrayBuffer.prototype.slice()")}}</dt>
<dd>Returns a new <code>ArrayBuffer</code> whose contents are a copy of this <code>ArrayBuffer</code>'s bytes from <code>begin</code>, inclusive, up to <code>end</code>, exclusive. If either <code>begin</code> or <code>end</code> is negative, it refers to an index from the end of the array, as opposed to from the beginning.</dd>
</dl>
<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('ES6', '#sec-arraybuffer.prototype', 'ArrayBuffer.prototype')}}</td>
<td>{{Spec2('ES6')}}</td>
<td>Initial definition.</td>
</tr>
<tr>
<td>{{SpecName('ESDraft', '#sec-arraybuffer.prototype', 'ArrayBuffer.prototype')}}</td>
<td>{{Spec2('ESDraft')}}</td>
<td> </td>
</tr>
</tbody>
</table>
<h2 id="瀏覽器相容性">瀏覽器相容性</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</th>
</tr>
<tr>
<td>Basic support</td>
<td>7.0</td>
<td>{{ CompatGeckoDesktop("2")}}</td>
<td>10</td>
<td>11.6</td>
<td>5.1</td>
</tr>
</tbody>
</table>
</div>
<div id="compat-mobile">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Android</th>
<th>Chrome for Android</th>
<th>Firefox Mobile (Gecko)</th>
<th>IE Mobile</th>
<th>Opera Mobile</th>
<th>Safari Mobile</th>
</tr>
<tr>
<td>Basic support</td>
<td>4.0</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatGeckoMobile("2")}}</td>
<td>10</td>
<td>11.6</td>
<td>4.2</td>
</tr>
</tbody>
</table>
</div>
<h2 id="參見">參見</h2>
<ul>
<li>{{jsxref("ArrayBuffer")}}</li>
</ul>
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