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282 lines
24 KiB
HTML
<article id="wikiArticle">
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<div></div>
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<p>The <code><strong>toLocaleTimeString()</strong></code> <span style="line-height: 1.5;">方法返回该日期对象时间部分的字符串，该字符串格式因不同语言而不同。新增的参数 </span><code style="font-style: normal; line-height: 1.5;">locales</code><span style="line-height: 1.5;"> 和 </span><code style="font-style: normal; line-height: 1.5;">options</code><span style="line-height: 1.5;"> 使程序能够指定使用哪种语言格式化规则，允许定制该方法的表现（behavior）。在旧版本浏览器中， </span><code style="font-style: normal; line-height: 1.5;">locales</code><span style="line-height: 1.5;"> 和 </span><code style="font-style: normal; line-height: 1.5;">options</code><span style="line-height: 1.5;"> 参数被忽略，使用的语言环境和返回的字符串格式是各自独立实现的。</span></p>
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<div><iframe class="interactive interactive-js" frameborder="0" height="250" src="https://interactive-examples.mdn.mozilla.net/pages/js/date-tolocaletimestring.html" width="100%"></iframe></div>
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<p class="hidden">The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone <a class="external" href="https://github.com/mdn/interactive-examples" rel="noopener">https://github.com/mdn/interactive-examples</a> and send us a pull request.</p>
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<h2 id="Syntax" name="Syntax">语法</h2>
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<pre><code class="language-javascript"><var>dateObj</var>.toLocaleTimeString([locales [, options]])</code></pre>
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<h3 id="Parameters" name="Parameters">参数</h3>
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<p>查看<a href="#Browser_Compatibility" title="#Browser_Compatibility">浏览器兼容性</a>小节，看下哪些浏览器支持 <code style="font-style: normal;">locales</code> 和 <code style="font-style: normal;">options</code> 参数，还可以参看<a href="#Example:_Checking_for_support_for_locales_and_options_arguments">例子：检测 <code>locales</code> 和 <code>options</code> 参数支持情况</a>。</p>
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<p></p>
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<p>The default value for each date-time component property is <code>undefined</code>, but if the <code>hour</code>, <code>minute</code>, <code>second</code> properties are all <code>undefined</code>, then <code>hour</code>, <code>minute</code>, and <code>second</code> are assumed to be "numeric".</p>
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<h2 id="Examples" name="Examples">例子</h2>
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<h3 id="Example:_Using_toLocaleTimeString" name="Example:_Using_toLocaleTimeString">例子：使用 <code>toLocaleTimeString</code></h3>
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<p>没有指定语言环境（locale）时，返回一个使用默认语言环境和格式设置（options）的格式化字符串。</p>
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<pre><code class="language-js">var date = new Date(Date.UTC(2012, 11, 12, 3, 0, 0));
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// toLocaleTimeString without arguments depends on the implementation,
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// the default locale, and the default time zone
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alert(date.toLocaleTimeString());
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// → "7:00:00 PM" if run in en-US locale with time zone America/Los_Angeles</code></pre>
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<h3 id="Example:_Checking_for_support_for_locales_and_options_arguments" name="Example:_Checking_for_support_for_locales_and_options_arguments">例子：检测 <code>locales</code> 和 <code>options</code> 支持情况</h3>
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<p><code style="font-style: normal;">locales</code> 和 <code style="font-style: normal;">options</code> 参数不是所有的浏览器都支持。为了检测一种实现环境（implementation）是否支持它们，可以使用不合法的语言标签，如果实现环境支持该参数，则会抛出一个 <code style="font-style: normal;">RangeError</code> 异常，反之会忽略参数。</p>
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<pre><code class="language-javascript">function toLocaleTimeStringSupportsLocales() {
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try {
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new Date().toLocaleTimeString("i");
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} catch (e) {
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return e.name === "RangeError";
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}
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return false;
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}
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</code></pre>
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<h3 id="Example:_Using_locales" name="Example:_Using_locales">例子：使用 <code>locales</code> 参数</h3>
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<p>下例展示了本地化时间格式的一些变化。为了在应用的用户界面得到某种语言的时间格式，必须确保使用 <code style="font-style: normal;">locales</code> 参数指定了该语言（可能还需要设置某些回退语言）。</p>
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<pre><code class="language-javascript">var date = new Date(Date.UTC(2012, 11, 20, 3, 0, 0));
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// formats below assume the local time zone of the locale;
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// America/Los_Angeles for the US
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// US English uses 12-hour time with AM/PM
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alert(date.toLocaleTimeString("en-US"));
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// → "7:00:00 PM"
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// British English uses 24-hour time without AM/PM
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alert(date.toLocaleTimeString("en-GB"));
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// → "03:00:00"
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// Korean uses 12-hour time with AM/PM
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alert(date.toLocaleTimeString("ko-KR"));
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// → "오후 12:00:00"
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// Arabic in most Arabic speaking countries uses real Arabic digits
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alert(date.toLocaleTimeString("ar-EG"));
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// → "<span dir="rtl">٧:٠٠:٠٠ م</span>"
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// when requesting a language that may not be supported, such as
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// Balinese, include a fallback language, in this case Indonesian
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alert(date.toLocaleTimeString(["ban", "id"]));
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// → "11.00.00"
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</code></pre>
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<h3 id="Example:_Using_options" name="Example:_Using_options">例子：使用 <code>options</code> 参数</h3>
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<p>可以使用 <code style="font-style: normal;">options </code>参数来自定义 <code style="font-style: normal;">toLocaleTimeString</code> 方法返回的字符串。</p>
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<pre><code class="language-javascript">var date = new Date(Date.UTC(2012, 11, 20, 3, 0, 0));
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// an application may want to use UTC and make that visible
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var options = {timeZone: "UTC", timeZoneName: "short"};
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alert(date.toLocaleTimeString("en-US", options));
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// → "3:00:00 AM GMT"
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// sometimes even the US needs 24-hour time
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alert(date.toLocaleTimeString("en-US", {hour12: false}));
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// → "19:00:00"
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</code></pre>
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<h2 id="Performance" name="Performance">性能</h2>
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<p>当格式化大量日期时，最好创建一个 <a href="/en-US/docs/Web/JavaScript/Reference/Global_Objects/DateTimeFormat" title="/en-US/docs/JavaScript/Reference/Global_Objects/DateTimeFormat"><code>Intl.DateTimeFormat</code></a> 对象，然后使用该对象 <a href="/en-US/docs/Web/JavaScript/Reference/Global_Objects/DateTimeFormat/format" title="/en-US/docs/JavaScript/Reference/Global_Objects/DateTimeFormat/format"><code>format</code></a> 属性提供的方法。</p>
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<h2 id="规范">规范</h2>
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<table class="standard-table">
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<tbody>
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<tr>
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<th scope="col">规范版本</th>
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<th scope="col">规范状态</th>
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<th scope="col">注解</th>
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</tr>
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<tr>
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<td>ECMAScript 3rd Edition. Implemented in JavaScript 1.0</td>
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<td>Standard</td>
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<td>Initial definition.</td>
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</tr>
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<tr>
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<td><a class="external" href="https://www.ecma-international.org/ecma-262/5.1/#sec-15.9.5.7" hreflang="en" lang="en" rel="noopener">ECMAScript 5.1 (ECMA-262)<br/><small lang="zh-CN">Date.prototype.toLocaleTimeString</small></a></td>
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<td><span class="spec-Standard">Standard</span></td>
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<td> </td>
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</tr>
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<tr>
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<td><a class="external" href="https://www.ecma-international.org/ecma-262/6.0/#sec-date.prototype.tolocalestring" hreflang="en" lang="en" rel="noopener">ECMAScript 2015 (6th Edition, ECMA-262)<br/><small lang="zh-CN">Date.prototype.toLocaleTimeString</small></a></td>
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<td><span class="spec-Standard">Standard</span></td>
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<td> </td>
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</tr>
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<tr>
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<td><a class="external" href="http://www.ecma-international.org/ecma-402/1.0/#sec-13.3.3" rel="noopener">ECMAScript Internationalization API Specification, 1<sup>st</sup> Edition</a></td>
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<td>Standard</td>
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<td>Defines <code>locales</code> and <code>options</code> arguments.</td>
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</tr>
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</tbody>
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</table>
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<h2 id="浏览器兼容性">浏览器兼容性</h2>
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<div>
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<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a class="external" href="https://github.com/mdn/browser-compat-data" rel="noopener">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>
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<p></p><div class="bc-data"><a class="bc-github-link external" href="https://github.com/mdn/browser-compat-data" rel="noopener">Update compatibility data on GitHub</a><table class="bc-table bc-table-js"><thead><tr class="bc-platforms"><td></td><th class="bc-platform-desktop" colspan="6"><span>Desktop</span></th><th class="bc-platform-mobile" colspan="7"><span>Mobile</span></th><th class="bc-platform-server" colspan="1"><span>Server</span></th></tr><tr class="bc-browsers"><td></td><th class="bc-browser-chrome"><span class="bc-head-txt-label bc-head-icon-chrome">Chrome</span></th><th class="bc-browser-edge"><span class="bc-head-txt-label bc-head-icon-edge">Edge</span></th><th class="bc-browser-firefox"><span class="bc-head-txt-label bc-head-icon-firefox">Firefox</span></th><th class="bc-browser-ie"><span class="bc-head-txt-label bc-head-icon-ie">Internet Explorer</span></th><th class="bc-browser-opera"><span class="bc-head-txt-label bc-head-icon-opera">Opera</span></th><th class="bc-browser-safari"><span class="bc-head-txt-label bc-head-icon-safari">Safari</span></th><th class="bc-browser-webview_android"><span class="bc-head-txt-label bc-head-icon-webview_android">Android webview</span></th><th class="bc-browser-chrome_android"><span class="bc-head-txt-label bc-head-icon-chrome_android">Chrome for Android</span></th><th class="bc-browser-edge_mobile"><span class="bc-head-txt-label bc-head-icon-edge_mobile">Edge Mobile</span></th><th class="bc-browser-firefox_android"><span class="bc-head-txt-label bc-head-icon-firefox_android">Firefox for Android</span></th><th class="bc-browser-opera_android"><span class="bc-head-txt-label bc-head-icon-opera_android">Opera for Android</span></th><th class="bc-browser-safari_ios"><span class="bc-head-txt-label bc-head-icon-safari_ios">Safari on iOS</span></th><th class="bc-browser-samsunginternet_android"><span class="bc-head-txt-label bc-head-icon-samsunginternet_android">Samsung Internet</span></th><th class="bc-browser-nodejs"><span class="bc-head-txt-label bc-head-icon-nodejs">Node.js</span></th></tr></thead><tbody><tr><th scope="row"><code>toLocaleTimeString</code></th><td class="bc-supports-yes bc-browser-chrome"><span class="bc-browser-name">Chrome</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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Yes</td><td class="bc-supports-yes bc-browser-edge"><span class="bc-browser-name">Edge</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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12</td><td class="bc-supports-yes bc-browser-firefox"><span class="bc-browser-name">Firefox</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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1</td><td class="bc-supports-yes bc-browser-ie"><span class="bc-browser-name">IE</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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Yes</td><td class="bc-supports-yes bc-browser-opera"><span class="bc-browser-name">Opera</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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Yes</td><td class="bc-supports-yes bc-browser-safari"><span class="bc-browser-name">Safari</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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Yes</td><td class="bc-supports-yes bc-browser-webview_android"><span class="bc-browser-name">WebView Android</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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Yes</td><td class="bc-supports-yes bc-browser-chrome_android"><span class="bc-browser-name">Chrome Android</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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Yes</td><td class="bc-supports-yes bc-browser-edge_mobile"><span class="bc-browser-name">Edge Mobile</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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Yes</td><td class="bc-supports-yes bc-browser-firefox_android"><span class="bc-browser-name">Firefox Android</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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4</td><td class="bc-supports-yes bc-browser-opera_android"><span class="bc-browser-name">Opera Android</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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Yes</td><td class="bc-supports-yes bc-browser-safari_ios"><span class="bc-browser-name">Safari iOS</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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Yes</td><td class="bc-supports-yes bc-browser-samsunginternet_android"><span class="bc-browser-name">Samsung Internet Android</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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Yes</td><td class="bc-supports-unknown bc-browser-nodejs"><span class="bc-browser-name">nodejs</span><abbr title="Compatibility unknown; please update this.">
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?
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</abbr></td></tr><tr><th scope="row"><code>locales</code></th><td class="bc-supports-yes bc-browser-chrome"><span class="bc-browser-name">Chrome</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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24</td><td class="bc-supports-yes bc-browser-edge"><span class="bc-browser-name">Edge</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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12</td><td class="bc-supports-yes bc-browser-firefox"><span class="bc-browser-name">Firefox</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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29</td><td class="bc-supports-yes bc-browser-ie"><span class="bc-browser-name">IE</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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11</td><td class="bc-supports-yes bc-browser-opera"><span class="bc-browser-name">Opera</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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15</td><td class="bc-supports-yes bc-browser-safari"><span class="bc-browser-name">Safari</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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10</td><td class="bc-supports-no bc-browser-webview_android"><span class="bc-browser-name">WebView Android</span><abbr class="bc-level-no only-icon" title="No support">
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<span>No support</span>
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</abbr>
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No</td><td class="bc-supports-yes bc-browser-chrome_android"><span class="bc-browser-name">Chrome Android</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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26</td><td class="bc-supports-unknown bc-browser-edge_mobile"><span class="bc-browser-name">Edge Mobile</span><abbr title="Compatibility unknown; please update this.">
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?
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</abbr></td><td class="bc-supports-yes bc-browser-firefox_android"><span class="bc-browser-name">Firefox Android</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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56</td><td class="bc-supports-no bc-browser-opera_android"><span class="bc-browser-name">Opera Android</span><abbr class="bc-level-no only-icon" title="No support">
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<span>No support</span>
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</abbr>
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No</td><td class="bc-supports-yes bc-browser-safari_ios"><span class="bc-browser-name">Safari iOS</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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10</td><td class="bc-supports-yes bc-browser-samsunginternet_android"><span class="bc-browser-name">Samsung Internet Android</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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Yes</td><td class="bc-supports-unknown bc-browser-nodejs"><span class="bc-browser-name">nodejs</span><abbr title="Compatibility unknown; please update this.">
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?
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</abbr></td></tr><tr><th scope="row"><code>options</code></th><td class="bc-supports-yes bc-browser-chrome"><span class="bc-browser-name">Chrome</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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24</td><td class="bc-supports-yes bc-browser-edge"><span class="bc-browser-name">Edge</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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12</td><td class="bc-supports-yes bc-browser-firefox"><span class="bc-browser-name">Firefox</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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29</td><td class="bc-supports-yes bc-browser-ie"><span class="bc-browser-name">IE</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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11</td><td class="bc-supports-yes bc-browser-opera"><span class="bc-browser-name">Opera</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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15</td><td class="bc-supports-yes bc-browser-safari"><span class="bc-browser-name">Safari</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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10</td><td class="bc-supports-no bc-browser-webview_android"><span class="bc-browser-name">WebView Android</span><abbr class="bc-level-no only-icon" title="No support">
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<span>No support</span>
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</abbr>
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No</td><td class="bc-supports-yes bc-browser-chrome_android"><span class="bc-browser-name">Chrome Android</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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26</td><td class="bc-supports-unknown bc-browser-edge_mobile"><span class="bc-browser-name">Edge Mobile</span><abbr title="Compatibility unknown; please update this.">
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?
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</abbr></td><td class="bc-supports-yes bc-browser-firefox_android"><span class="bc-browser-name">Firefox Android</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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56</td><td class="bc-supports-no bc-browser-opera_android"><span class="bc-browser-name">Opera Android</span><abbr class="bc-level-no only-icon" title="No support">
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<span>No support</span>
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</abbr>
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No</td><td class="bc-supports-yes bc-browser-safari_ios"><span class="bc-browser-name">Safari iOS</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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10</td><td class="bc-supports-yes bc-browser-samsunginternet_android"><span class="bc-browser-name">Samsung Internet Android</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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Yes</td><td class="bc-supports-unknown bc-browser-nodejs"><span class="bc-browser-name">nodejs</span><abbr title="Compatibility unknown; please update this.">
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?
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</abbr></td></tr><tr><th scope="row">IANA time zone names in <code>timeZone</code> option</th><td class="bc-supports-yes bc-browser-chrome"><span class="bc-browser-name">Chrome</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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24</td><td class="bc-supports-yes bc-browser-edge"><span class="bc-browser-name">Edge</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
|
||
14</td><td class="bc-supports-yes bc-browser-firefox"><span class="bc-browser-name">Firefox</span><abbr class="bc-level-yes only-icon" title="Full support">
|
||
<span>Full support</span>
|
||
</abbr>
|
||
52</td><td class="bc-supports-unknown bc-browser-ie"><span class="bc-browser-name">IE</span><abbr title="Compatibility unknown; please update this.">
|
||
?
|
||
</abbr></td><td class="bc-supports-unknown bc-browser-opera"><span class="bc-browser-name">Opera</span><abbr title="Compatibility unknown; please update this.">
|
||
?
|
||
</abbr></td><td class="bc-supports-unknown bc-browser-safari"><span class="bc-browser-name">Safari</span><abbr title="Compatibility unknown; please update this.">
|
||
?
|
||
</abbr></td><td class="bc-supports-unknown bc-browser-webview_android"><span class="bc-browser-name">WebView Android</span><abbr title="Compatibility unknown; please update this.">
|
||
?
|
||
</abbr></td><td class="bc-supports-unknown bc-browser-chrome_android"><span class="bc-browser-name">Chrome Android</span><abbr title="Compatibility unknown; please update this.">
|
||
?
|
||
</abbr></td><td class="bc-supports-unknown bc-browser-edge_mobile"><span class="bc-browser-name">Edge Mobile</span><abbr title="Compatibility unknown; please update this.">
|
||
?
|
||
</abbr></td><td class="bc-supports-no bc-browser-firefox_android"><span class="bc-browser-name">Firefox Android</span><abbr class="bc-level-no only-icon" title="No support">
|
||
<span>No support</span>
|
||
</abbr>
|
||
No</td><td class="bc-supports-unknown bc-browser-opera_android"><span class="bc-browser-name">Opera Android</span><abbr title="Compatibility unknown; please update this.">
|
||
?
|
||
</abbr></td><td class="bc-supports-unknown bc-browser-safari_ios"><span class="bc-browser-name">Safari iOS</span><abbr title="Compatibility unknown; please update this.">
|
||
?
|
||
</abbr></td><td class="bc-supports-unknown bc-browser-samsunginternet_android"><span class="bc-browser-name">Samsung Internet Android</span><abbr title="Compatibility unknown; please update this.">
|
||
?
|
||
</abbr></td><td class="bc-supports-unknown bc-browser-nodejs"><span class="bc-browser-name">nodejs</span><abbr title="Compatibility unknown; please update this.">
|
||
?
|
||
</abbr></td></tr></tbody></table><section class="bc-legend" id="sect1"><h3 class="offscreen" id="Legend">Legend</h3><dl><dt><span class="bc-supports-yes bc-supports">
|
||
<abbr class="bc-level bc-level-yes only-icon" title="Full support">
|
||
<span>Full support</span>
|
||
|
||
</abbr></span></dt><dd>Full support</dd><dt><span class="bc-supports-no bc-supports">
|
||
<abbr class="bc-level bc-level-no only-icon" title="No support">
|
||
<span>No support</span>
|
||
|
||
</abbr></span></dt><dd>No support</dd><dt><span class="bc-supports-unknown bc-supports">
|
||
<abbr class="bc-level bc-level-unknown only-icon" title="Compatibility unknown">
|
||
<span>Compatibility unknown</span>
|
||
|
||
</abbr></span></dt><dd>Compatibility unknown</dd></dl></section></div><p></p>
|
||
</div>
|
||
<h2 id="See_Also" name="See_Also">相关链接</h2>
|
||
<ul>
|
||
<li><a href="Reference/Global_Objects/DateTimeFormat" title="交互示例的源代码存储在 GitHub 资源库。如果你愿意分布交互示例，请复制https://github.com/mdn/interactive-examples，并向我们发送一个pull请求。"><code>DateTimeFormat</code></a></li>
|
||
<li><a href="Reference/Global_Objects/Date/toLocaleDateString" title="toLocaleDateString() 方法返回该日期对象日期部分的字符串，该字符串格式因不同语言而不同。新增的参数 locales 和 options 使程序能够指定使用哪种语言格式化规则，允许定制该方法的表现（behavior）。在旧版本浏览器中， locales 和 options 参数被忽略，使用的语言环境和返回的字符串格式是各自独立实现的。"><code>Date.prototype.toLocaleDateString()</code></a></li>
|
||
<li><a href="Reference/Global_Objects/Date/toLocaleString" title="toLocaleString() 方法返回该日期对象的字符串，该字符串格式因不同语言而不同。新增的参数 locales 和 options 使程序能够指定使用哪种语言格式化规则，允许定制该方法的表现（behavior）。在旧版本浏览器中， locales 和 options 参数被忽略，使用的语言环境和返回的字符串格式是各自独立实现的。"><code>Date.prototype.toLocaleString()</code></a></li>
|
||
<li><a href="Reference/Global_Objects/Date/toTimeString" title="toTimeString() 方法以人类易读形式返回一个日期对象时间部分的字符串，该字符串以美式英语格式化。"><code>Date.prototype.toTimeString()</code></a></li>
|
||
</ul>
|
||
</article> |