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+---
+title: Intl.getCanonicalLocales()
+slug: Web/JavaScript/Reference/Global_Objects/Intl/getCanonicalLocales
+tags:
+  - 区域语言代码
+  - 去重
+translation_of: Web/JavaScript/Reference/Global_Objects/Intl/getCanonicalLocales
+---
+<div>{{JSRef}}</div>
+
+<p><strong><code>Intl.getCanonicalLocales()</code></strong> 方法返回一个数组，数组包含规范的区域语言代码，重复的元素将会被去除，每一个元素都会被验证为格式有效的区域语言代码。</p>
+
+<div>{{EmbedInteractiveExample("pages/js/intl-getcanonicallocales.html")}}</div>
+
+
+
+<h2 id="Syntax">Syntax</h2>
+
+<pre class="syntaxbox">Intl.getCanonicalLocales(locales)</pre>
+
+<h3 id="参数">参数</h3>
+
+<dl>
+ <dt><code>locales</code></dt>
+ <dd>想要规范化的字符串数组。</dd>
+</dl>
+
+<h3 id="Return_value">Return value</h3>
+
+<p>一个包含规范区域语言代码的数组。</p>
+
+<h2 id="例子">例子</h2>
+
+<pre class="brush: js">Intl.getCanonicalLocales('EN-US'); // ["en-US"]
+Intl.getCanonicalLocales(['EN-US', 'Fr']); // ["en-US", "fr"]
+
+Intl.getCanonicalLocales('EN_US');
+// RangeError:'EN_US' is not a structurally valid language tag
+</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('ES Int Draft', '#sec-intl.getcanonicallocales', 'Intl.getCanonicalLocales')}}</td>
+   <td>{{Spec2('ES Int Draft')}}</td>
+   <td>Initial definition</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容">浏览器兼容</h2>
+
+<div>
+
+
+<p>{{Compat("javascript.builtins.Intl.getCanonicalLocales")}}</p>
+</div>
+
+<h2 id="参见">参见</h2>
+
+<ul>
+ <li>{{jsxref("NumberFormat.supportedLocalesOf", "Intl.NumberFormat.supportedLocalesOf()")}}</li>
+ <li>{{jsxref("DateTimeFormat.supportedLocalesOf", "Intl.DateTimeFormat.supportedLocalesOf()")}}</li>
+ <li>{{jsxref("Collator.supportedLocalesOf", "Intl.Collator.supportedLocalesOf()")}}</li>
+</ul>