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author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
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committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
commit | 33058f2b292b3a581333bdfb21b8f671898c5060 (patch) | |
tree | 51c3e392513ec574331b2d3f85c394445ea803c6 /files/zh-cn/web/javascript/reference/global_objects/intl/relativetimeformat | |
parent | 8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff) | |
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diff --git a/files/zh-cn/web/javascript/reference/global_objects/intl/relativetimeformat/index.html b/files/zh-cn/web/javascript/reference/global_objects/intl/relativetimeformat/index.html new file mode 100644 index 0000000000..561af8a1fe --- /dev/null +++ b/files/zh-cn/web/javascript/reference/global_objects/intl/relativetimeformat/index.html @@ -0,0 +1,165 @@ +--- +title: Intl.RelativeTimeFormat +slug: Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat +translation_of: Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat +--- +<div> +<div>{{JSRef}}</div> + +<p><strong><code>Intl.RelativeTimeFormat</code></strong>对象启用本地化的相对时间格式。</p> + +<div>{{EmbedInteractiveExample("pages/js/intl-relativetimeformat.html")}}</div> + +<p class="hidden">此交互式示例的源存储在GitHub存储库中。如果您想参与交互式示例项目,请克隆<a href="https://github.com/mdn/interactive-examples">https://github.com/mdn/interactive-examples</a>并向我们发送拉取请求。</p> + +<h2 id="句法">句法</h2> + +<pre class="notranslate"><code>new Intl.RelativeTimeFormat([<var>locales</var>[, <var>options</var>]]) +</code></pre> + +<h3 id="参数">参数</h3> + +<dl> + <dt><code>locales</code></dt> + <dd> + <p>可选的。带有BCP 47语言标记的字符串,或此类字符串的数组。有关参数的一般形式和解释<code>locales</code>,请参阅{{jsxref("Global_Objects/Intl","Intl page","#Locale_identification_and_negotiation",1)}}。</p> + </dd> + <dt><code>options</code></dt> + <dd>可选的。具有以下部分或全部属性的对象: + <ul> + <li><code>localeMatcher</code><br> + 要使用的区域设置匹配算法。可能的值是<code>"lookup"</code>和<code>"best fit"</code>; 默认是<code>"best fit"</code>。有关此选项的信息,请参阅<a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl#Locale_negotiation" rel="nofollow"><code>Intl</code></a>。</li> + <li><code>numeric</code><br> + 输出消息的格式。可能的值是: + <ul> + <li><code>"always"</code>(默认,例如,<code>1 day ago</code>),</li> + <li>或<code>"auto"</code>(例如<code>yesterday</code>)。该<code>"auto"</code>值允许不必总是在输出中使用数值。</li> + </ul> + </li> + <li><code>style</code><br> + 国际化信息的长度。可能的值是: + <ul> + <li><code>"long"</code>(默认,例如,<code>in 1 month</code>)</li> + <li><code>"short"</code>(例如<code>in 1 mo.</code>),</li> + <li>或<code>"narrow"</code>(例如<code>in 1 mo.</code>)。狭窄的风格可能类似于某些语言环境的短风格。</li> + </ul> + </li> + </ul> + </dd> +</dl> + +<h2 id="描述">描述</h2> + +<h3 id="属性">属性</h3> + +<dl> + <dt>{{jsxref("RelativeTimeFormat.prototype","Intl.RelativeTimeFormat.prototype")}}</dt> + <dd>允许向所有对象添加属性。</dd> +</dl> + +<h3 id="方法">方法</h3> + +<dl> + <dt>{{jsxref("RelativeTimeFormat.supportedLocalesOf","Intl.RelativeTimeFormat.supportedLocalesOf()")}}</dt> + <dd>返回一个数组,其中包含所支持的语言环境,而不必回退到运行时的默认语言环境。</dd> +</dl> + +<h2 id="RelativeTimeFormat_实例"><code>RelativeTimeFormat</code> 实例</h2> + +<h3 id="属性_2">属性</h3> + +<p><code>RelativeTimeFormat</code> 实例从其原型继承以下属性:</p> + +<p>{{page('/en-US/docs/Web/JavaScript/Reference/Global_Objects/RelativeTimeFormat/prototype','Properties')}}</p> + +<h3 id="方法_2">方法</h3> + +<p><code>RelativeTimeFormat</code> 实例从其原型继承以下方法:</p> + +<p>{{page('/en-US/docs/Web/JavaScript/Reference/Global_Objects/RelativeTimeFormat/prototype','Methods')}}</p> + +<h2 id="例子">例子</h2> + +<h3 id="基本format用法">基本<code>format</code>用法</h3> + +<p>以下示例显示如何使用英语创建相对时间格式化程序。</p> + +<pre class="brush: js notranslate">//在语言环境中创建相对时间格式化程序 +//显式传入默认值。 +const rtf = new Intl.RelativeTimeFormat("en",{ + localeMatcher: "bestfit",//其他值:"lookup" + numeric: "always",//其他值:"auto" + style: "long",//其他值:"short"或"narrow" +}); + +//使用负值(-1)格式化相对时间。 +rtf.format(-1,"day"); +//>"1 day ago" + +//使用正值(1)格式化相对时间。 +rtf.format(1,"day"); +//>"in 1 day"</pre> + +<h3 id="使用auto选项">使用<code>auto</code>选项</h3> + +<p>如果<code>numeric:auto</code>选项被传递,它将生成字符串<code>yesterday</code>或<code>tomorrow</code>代替<code>1 day ago</code>或<code>in 1 day</code>。这允许不必总是在输出中使用数值。</p> + +<pre class="brush: js notranslate">//在语言环境中创建相对时间格式化程序 +//使用数字:传入"auto"选项值。 +const rtf = new Intl.RelativeTimeFormat("en",{numeric: "auto"}); + +//使用负值(-1)格式化相对时间。 +rtf.format(-1,"day"); +//>"yesterday" + +//使用正日单位(1)格式化相对时间。 +rtf.format(1,"day"); +//>"tomorrow" +</pre> + +<h3 id="运用_formatToParts">运用 <code>formatToParts</code></h3> + +<p>以下示例显示如何创建返回格式化部件的相对时间格式器</p> + +<pre class="brush: js notranslate">const rtf = new Intl.RelativeTimeFormat("en",{numeric: "auto"}); + +//使用日期单位格式化相对时间。 +rtf.formatToParts(-1,"day"); +//> [{type: "literal",value: "yesterday"}] + +rtf.formatToParts(100,"day"); +//> [{type: "literal",value: "in"}, +//> {type: "integer",value: "100",unit: "day"}, +//> {type: "literal",value: "days"}]</pre> +</div> + +<h2 id="Specifications">Specifications</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><a href="https://tc39.es/proposal-intl-relative-time/#sec-intl-relativetimeformat-constructor">Intl.RelativeTimeFormat Constructor</a></td> + <td>Stage 3</td> + <td></td> + </tr> + </tbody> +</table> + +<h2 id="Browser_compatibility">Browser compatibility</h2> + +<div> + + +<p>{{Compat("javascript.builtins.Intl.RelativeTimeFormat")}}</p> + +<h2 id="See_also">See also</h2> + +<ul> + <li><a href="https://developers.google.com/web/updates/2018/10/intl-relativetimeformat">The Intl.RelativeTimeFormat API</a></li> +</ul> +</div> |