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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: text-decoration
+slug: Web/CSS/text-decoration
+tags:
+ - 文本修饰
+translation_of: Web/CSS/text-decoration
+---
+<div>{{ CSSRef() }}</div>
+
+<h2 id="Summary" name="Summary">简介</h2>
+
+<p>{{EmbedInteractiveExample("pages/css/text-decoration.html")}}</p>
+
+<p><code>text-decoration</code> 这个 CSS 属性是用于设置文本的修饰线外观的(下划线、上划线、贯穿线/删除线  或 闪烁)它是 {{cssxref("text-decoration-line")}}, {{cssxref("text-decoration-color")}}, {{cssxref("text-decoration-style")}}, 和新出现的 {{cssxref("text-decoration-thickness")}} 属性的缩写。</p>
+
+<p>文本修饰属性会延伸到子元素。这意味着如果祖先元素指定了文本修饰属性,子元素则不能将其删除。例如,在如下标记中<code> &lt;p&gt;This text has &lt;em&gt;some emphasized words&lt;/em&gt; in it.&lt;/p&gt;,应用样式</code><code>p { text-decoration: underline }</code> 会对整个段落添加下划线,此时再添加样式 <code>em { text-decoration: none }</code> 则不会引起任何改变,整个段落仍然有下划线修饰。然而,新加样式 <code>em { text-decoration: overline }</code> 则会在&lt;em&gt;标记的文字上再添加上这种overline样式。</p>
+
+<h2 id="Syntax" name="Syntax">语法</h2>
+
+<p>text-decoration属性是一种简写属性,并且可以使用普通属性三个值中的任何一个。普通属性如下:{{cssxref("text-decoration-line")}},{{cssxref("text-decoration-color")}}和{{cssxref("text-decoration-style")}}</p>
+
+<h3 id="值">值</h3>
+
+<dl>
+ <dt>{{cssxref("text-decoration-line")}}</dt>
+ <dd>文本修饰的位置, 如下划线<code>underline</code>,删除线<code>line-through</code></dd>
+ <dt>{{cssxref("text-decoration-color")}}</dt>
+ <dd>文本修饰的颜色</dd>
+ <dt>{{cssxref("text-decoration-style")}}</dt>
+ <dd>文本修饰的样式, 如波浪线<code>wavy</code>实线<code>solid</code>虚线<code>dashed</code></dd>
+ <dt>{{cssxref("text-decoration-thickness")}}</dt>
+ <dd>文本修饰线的粗细</dd>
+</dl>
+
+<h3 id="语法形式">语法形式</h3>
+
+<pre class="syntaxbox">{{csssyntax("text-decoration")}}
+</pre>
+
+<h2 id="示例">示例</h2>
+
+<pre class="brush: html"><code>&lt;p class="under"&gt;This text has a line underneath it.&lt;/p&gt;
+&lt;p class="over"&gt;This text has a line over it.&lt;/p&gt;
+&lt;p class="line"&gt;This text has a line going through it.&lt;/p&gt;
+&lt;p&gt;This &lt;a class="plain" href="#"&gt;link will not be underlined&lt;/a&gt;,
+ as links generally are by default. Be careful when removing
+ the text decoration on anchors since users often depend on
+ the underline to denote hyperlinks.&lt;/p&gt;
+&lt;p class="underover"&gt;This text has lines above &lt;em&gt;and&lt;/em&gt; below it.&lt;/p&gt;
+&lt;p class="blink"&gt;This text might blink for you,
+ depending on the browser you use.&lt;/p&gt;</code></pre>
+
+<pre class="brush: css"><code>.under {
+ text-decoration: underline red;
+}
+
+.over {
+ text-decoration: wavy overline lime;
+}
+
+.line {
+ text-decoration: line-through;
+}
+
+.plain {
+ text-decoration: none;
+}
+
+.underover {
+ text-decoration: dashed underline overline;
+}
+
+.blink {
+ text-decoration: blink;
+}</code>
+</pre>
+
+<h3 id="结果">结果</h3>
+
+<p>{{EmbedLiveSample('示例','auto','280')}}</p>
+
+<h2 id="Specifications" name="Specifications">规范</h2>
+
+<table class="standard-table" style="height: 225px; width: 1157px;">
+ <thead>
+ <tr>
+ <th scope="col">规范</th>
+ <th scope="col">状态值</th>
+ <th scope="col">注解</th>
+ </tr>
+ </thead>
+ <tbody>
+ <tr>
+ <td>{{SpecName('CSS4 Text Decoration')}}</td>
+ <td>{{Spec2('CSS4 Text Decoration')}}</td>
+ <td>增加了 {{cssxref("text-decoration-thickness")}}; 注意这个属性还不是正式的,还没有明确。</td>
+ </tr>
+ <tr>
+ <td>{{ SpecName('CSS3 Text Decoration', '#text-decoration-property', 'text-decoration') }}</td>
+ <td>{{ Spec2('CSS3 Text Decoration') }}</td>
+ <td>转换为简写属性。支持{{ cssxref('text-decoration-style') }}值</td>
+ </tr>
+ <tr>
+ <td>{{ SpecName('CSS2.1', 'text.html#lining-striking-props', 'text-decoration') }}</td>
+ <td>{{ Spec2('CSS2.1') }}</td>
+ <td>没有显著变化</td>
+ </tr>
+ <tr>
+ <td>{{ SpecName('CSS1', '#text-decoration', 'text-decoration') }}</td>
+ <td>{{ Spec2('CSS1') }}</td>
+ <td>
+ <p>最初的规范</p>
+ </td>
+ </tr>
+ </tbody>
+</table>
+
+<p id="Browser_compatibility">{{cssinfo}}</p>
+
+<h2 id="Browser_compatibility" name="Browser_compatibility">浏览器兼容性</h2>
+
+<div class="hidden">
+<p>The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>
+</div>
+
+<p>{{Compat("css.properties.text-decoration")}}</p>
+
+<h2 id="参见">参见</h2>
+
+<ul>
+ <li>The individual text-decoration properties are {{cssxref("text-decoration-line")}}, {{cssxref("text-decoration-color")}}, and {{cssxref("text-decoration-style")}}.</li>
+ <li>The {{cssxref("list-style")}} attribute controls the appearance of items in HTML {{HTMLElement("ol")}} and {{HTMLElement("ul")}} lists.</li>
+</ul>