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+---
+title: 'Symbol.prototype[@@toPrimitive]'
+slug: Web/JavaScript/Reference/Global_Objects/Symbol/@@toPrimitive
+translation_of: Web/JavaScript/Reference/Global_Objects/Symbol/@@toPrimitive
+---
+<div>{{JSRef}}</div>
+
+<p><code><strong>[@@toPrimitive]()</strong></code> 方法可将 Symbol 对象转换为原始值。</p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox"><var>Symbol()[Symbol.toPrimitive](hint);
+</var></pre>
+
+<h3 id="返回值">返回值</h3>
+
+<p>该原始值为指定的 {{jsxref("Symbol")}} 对象</p>
+
+<h2 id="描述">描述</h2>
+
+<p> {{jsxref("Symbol")}} 的 <code>[@@toPrimitive]()</code> 方法返回该 Symbol 对象原始值作为 Symbol 数据形式。 <code>hint</code> 参数未被使用。</p>
+
+<p>JavaScript 调用 <code>[@@toPrimitive]() </code>方法将一个对象转换为原始值表示。你不需要自己调用 <code>[@@toPrimitive]()</code> 方法；当对象需要被转换为原始值时，JavaScript 会自动地调用该方法。</p>
+
+<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('ES6', '#sec-symbol.prototype-@@toprimitive', 'Symbol.prototype.@@toPrimitive')}}</td>
+   <td>{{Spec2('ES6')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-symbol.prototype-@@toprimitive', 'Symbol.prototype.@@toPrimitive')}}</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.Symbol.@@toPrimitive")}}</p>
+
+<h2 id="参考资料">参考资料</h2>
+
+<ul>
+ <li>{{jsxref("Symbol.toPrimitive")}}</li>
+</ul>