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+---
+title: DataView.prototype.setBigUint64()
+slug: Web/JavaScript/Reference/Global_Objects/DataView/setBigUint64
+tags:
+  - BigInt
+  - DataView
+  - setBigUint64
+translation_of: Web/JavaScript/Reference/Global_Objects/DataView/setBigUint64
+---
+<div>{{JSRef}}</div>
+
+<p><strong><code>setBigUint64()</code> </strong>方法在距DataView 的起始位置的指定字节偏移处存储一个无符号的64位整数（unsigned  long long类型）值。</p>
+
+<div>{{EmbedInteractiveExample("pages/js/dataview-setbiguint64.html")}}</div>
+
+
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox"><var>dataview</var>.setBigUint64(byteOffset, value [, littleEndian])</pre>
+
+<h3 id="参数说明">参数说明</h3>
+
+<dl>
+ <dt>byteOffset</dt>
+ <dd>字节偏移量，为从视图的起始位置到数据存储位置的字节字节偏移量。</dd>
+ <dt>value</dt>
+ <dd>作为一个BigInt类型设置的数值。满足一个无符号的64位整数的最大可能数值是 <code><span class="blob-code-inner blob-code-marker">2n ** 64n - 1n</span></code><span class="blob-code-inner blob-code-marker"> (</span><code>18446744073709551615n</code><span class="blob-code-inner blob-code-marker">)</span>。当发生溢出时，将会变成0。</dd>
+ <dt>littleEndian</dt>
+ <dd>为可选参数，表示这个64位整数是否以little-endian 或者big-endian格式存储。如果设置为false 或者未指定（undefined），将会写入一个big-endian（大端模式：高位字节排放在内存的低地址端，低位字节排放在内存的高地址端）格式的数值。</dd>
+</dl>
+
+<h3 id="返回值">返回值</h3>
+
+<p>{{jsxref("undefined")}}.</p>
+
+<h3 id="抛出的错误">抛出的错误</h3>
+
+<dl>
+ <dt>{{jsxref("RangeError")}}</dt>
+ <dd>如果 byteOffset设置导致存储该数值时超出了视图的末尾位置，将会抛出错误。</dd>
+</dl>
+
+<h2 id="例子">例子</h2>
+
+<h3 id="使用_setBigUint64_方法">使用 <code>setBigUint64</code> 方法</h3>
+
+<pre class="brush:js">var buffer = new ArrayBuffer(8);
+var dataview = new DataView(buffer);
+dataview.setBigUint64(0, 3n);
+dataview.getBigUint64(0); // 3n
+</pre>
+
+<h2 id="相关规范">相关规范 </h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">规范</th>
+   <th scope="col">状态</th>
+   <th scope="col">解释</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-dataview.prototype.setbiguint64', 'DataView.prototype.setBigUint64()')}}</td>
+   <td>{{Spec2('ESDraft')}}</td>
+   <td></td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+
+
+<p>{{Compat("javascript.builtins.DataView.setBigUint64")}}</p>
+
+<h2 id="请参阅">请参阅</h2>
+
+<ul>
+ <li>{{jsxref("DataView")}}</li>
+ <li>{{jsxref("ArrayBuffer")}}</li>
+ <li>{{jsxref("BigInt")}}</li>
+</ul>