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authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
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+---
+title: <wbr>
+slug: Web/HTML/Element/wbr
+tags:
+ - Element
+ - HTML
+ - HTML text-level semantics
+ - Reference
+ - Web
+translation_of: Web/HTML/Element/wbr
+---
+<div>{{HTMLRef}}</div>
+
+<p><strong>HTML <code>&lt;wbr&gt;</code> 元素  </strong>— 一个文本中的位置,其中浏览器可以选择来换行,虽然它的换行规则可能不会在这里换行。</p>
+
+<table class="properties">
+ <tbody>
+ <tr>
+ <th scope="row"><a href="/en-US/docs/HTML/Content_categories">Content categories</a></th>
+ <td><a href="/en-US/docs/HTML/Content_categories#Flow_content">Flow content</a>, <a href="/en-US/docs/HTML/Content_categories#Phrasing_content">phrasing content</a>.</td>
+ </tr>
+ <tr>
+ <th scope="row">Permitted content</th>
+ <td>Empty</td>
+ </tr>
+ <tr>
+ <th scope="row">Tag omission</th>
+ <td>It is an {{Glossary("empty element")}}; it must have a start tag, but must not have an end tag.</td>
+ </tr>
+ <tr>
+ <th scope="row">Permitted parents</th>
+ <td>Any element that accepts <a href="/en-US/docs/HTML/Content_categories#Phrasing_content">phrasing content</a>.</td>
+ </tr>
+ <tr>
+ <th scope="row">Permitted ARIA roles</th>
+ <td>Any</td>
+ </tr>
+ <tr>
+ <th scope="row">DOM interface</th>
+ <td>{{domxref("HTMLElement")}}</td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="属性">属性</h2>
+
+<p>这个元素仅仅包含 <a href="/en-US/docs/HTML/Global_attributes">全局属性</a></p>
+
+<h2 id="Notes">Notes</h2>
+
+<p>在 UTF-8 编码的页面中, <code>&lt;wbr&gt;</code> 表现为 <code>U+200B ZERO-WIDTH SPACE</code> (零宽空格)代码点。特别是,它表现为 Unicode bidi BN 代码点,也就是说,它对 bidi-ordering 没有影响:<code>&lt;</code><code>div dir=rtl&gt;123,&lt;wbr&gt;456&lt;/div&gt;</code> 展示 <code>123,456</code> 而不是 <code>456,123</code>,当不拆成的两行时候。</p>
+
+<p>出于相同原因, <code>&lt;wbr&gt;</code>元素不会在换行的地方引入连字符。为了使连字符仅仅在行尾出现,使用连字符软实体 (<code>&amp;shy;</code>) 来代替。</p>
+
+<p>这个元素首先在 Internet Explorer 5.5 中实现,并且在 HTML5 中官方定义。</p>
+
+<h2 id="示例">示例</h2>
+
+<p><em><a class="external" href="https://web.archive.org/web/20121105171040/http://styleguide.yahoo.com/">Yahoo 代码规范</a> </em>推荐 <a class="external" href="https://web.archive.org/web/20121105171040/http://styleguide.yahoo.com/editing/treat-abbreviations-capitalization-and-titles-consistently/website-names-and-addresses">在标点之前为 URL 换行</a>,以便避免将标点符号留在行尾,这会让读者将 URL 的末尾搞错。</p>
+
+<pre class="brush: html">&lt;p&gt;http://this&lt;wbr&gt;.is&lt;wbr&gt;.a&lt;wbr&gt;.really&lt;wbr&gt;.long&lt;wbr&gt;.example&lt;wbr&gt;.com/With&lt;wbr&gt;/deeper&lt;wbr&gt;/level&lt;wbr&gt;/pages&lt;wbr&gt;/deeper&lt;wbr&gt;/level&lt;wbr&gt;/pages&lt;wbr&gt;/deeper&lt;wbr&gt;/level&lt;wbr&gt;/pages&lt;wbr&gt;/deeper&lt;wbr&gt;/level&lt;wbr&gt;/pages&lt;wbr&gt;/deeper&lt;wbr&gt;/level&lt;wbr&gt;/pages&lt;/p&gt;
+</pre>
+
+<p>{{EmbedLiveSample("示例")}}</p>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <thead>
+ <tr>
+ <th scope="col">Specification</th>
+ <th scope="col">Status</th>
+ <th scope="col">Comment</th>
+ </tr>
+ </thead>
+ <tbody>
+ <tr>
+ <td>{{SpecName('HTML WHATWG', 'semantics.html#the-wbr-element', '&lt;wbr&gt;')}}</td>
+ <td>{{Spec2('HTML WHATWG')}}</td>
+ <td> </td>
+ </tr>
+ <tr>
+ <td>{{SpecName('HTML5 W3C', 'text-level-semantics.html#the-wbr-element', '&lt;wbr&gt;')}}</td>
+ <td>{{Spec2('HTML5 W3C')}}</td>
+ <td> </td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+
+
+<p>{{Compat("html.elements.wbr")}}</p>