diff options
author | Mars Yao <marswiz@yeah.net> | 2021-03-16 01:40:33 +0800 |
---|---|---|
committer | GitHub <noreply@github.com> | 2021-03-16 01:40:33 +0800 |
commit | 9f4ae674a3f256e637b6539363f76a323e96f20c (patch) | |
tree | f7c238ade846db07205dfaffe8a041100d3bed07 /files/zh-cn/web/css/@property/initial-value | |
parent | 5c428c5d35af49a94703338caa9e05e960c01ac6 (diff) | |
download | translated-content-9f4ae674a3f256e637b6539363f76a323e96f20c.tar.gz translated-content-9f4ae674a3f256e637b6539363f76a323e96f20c.tar.bz2 translated-content-9f4ae674a3f256e637b6539363f76a323e96f20c.zip |
Add and translate pages about @property. (#171)
* 'add_@property_contents'
Diffstat (limited to 'files/zh-cn/web/css/@property/initial-value')
-rw-r--r-- | files/zh-cn/web/css/@property/initial-value/index.html | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/files/zh-cn/web/css/@property/initial-value/index.html b/files/zh-cn/web/css/@property/initial-value/index.html new file mode 100644 index 0000000000..61363a59fb --- /dev/null +++ b/files/zh-cn/web/css/@property/initial-value/index.html @@ -0,0 +1,101 @@ +--- +title: '初始值' +slug: Web/CSS/@property/initial-value +tags: + - CSS + - Reference + - Web + - Property + - Houdini +--- + +<div>{{CSSRef}}{{SeeCompatTable}}</div> + +<p><strong><code>initial-value</code></strong> <a href="/en-US/docs/Web/CSS">CSS</a>描述符在使用{{cssxref("@property")}} {{cssxref("at-rule")}}的时候是必需的,除非syntax属性接受了任何有效的token流。 它为属性设置初始值。</p> + +<p>被选定为<code>initial-value</code>的参数,依照<code>syntax</code>描述符定义,必须可以正确地解析。 因此,如果<code>syntax</code>描述符为<code><color></code>,那么初始值必须是一个有效的{{cssxref("color")}}值。</p> + +<h2 id="Syntax">语法</h2> + +<pre class="brush: css no-line-numbers">@property --property-name { + syntax: '<color>'; + inherits: false; + initial-value: #c0ffee; +} + +@property --property-name { + syntax: '<color>'; + inherits: true; + initial-value: #c0ffee; +}</pre> + +<h2 id="Values">取值</h2> + +<p>对于设定的<code>syntax</code>,具有正确值的字符串。</p> + +<h2 id="Formal_definition">标准定义</h2> + +<p>{{cssinfo}}</p> + +<h2 id="Formal_syntax">标准语法</h2> + +<pre class="brush: css">{{csssyntax}}</pre> + +<h2 id="Examples">实例</h2> + +<p>为 <code>--my-color</code> {{cssxref('--*', '自定义属性')}}添加颜色值类型检测、设置默认值并且设置属性值不允许被继承。</p> + +<p>使用 <a href="/en-US/docs/Web/CSS">CSS</a> {{cssxref('@property')}} <a href="/en-US/docs/Web/CSS/At-rule">规则</a>:</p> + +<pre class="brush: css">@property --my-color { + syntax: '<color>'; + inherits: false; + initial-value: #c0ffee; +} +</pre> + +<p>使用 <a href="/en-US/docs/Web/JavaScript">JavaScript中的</a> {{domxref('CSS.registerProperty')}}函数:</p> + +<pre class="brush: js">window.CSS.registerProperty({ + name: '--my-color', + syntax: '<color>', + inherits: false, + initialValue: '#c0ffee', +}); +</pre> + +<h2 id="Formal_syntax">标准语法</h2> + +<pre class="brush: css">{{csssyntax}}</pre> + +<h2 id="Specifications">规范</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">规范</th> + <th scope="col">状态</th> + <th scope="col">提案</th> + </tr> + <tr> + <td>{{SpecName('CSS Properties and Values API', '#at-property-rule')}}</td> + <td>{{Spec2('CSS Properties and Values API')}}</td> + <td>初始定义.</td> + </tr> + </tbody> +</table> + +<h2 id="Browser_compatibility">浏览器兼容性</h2> + +<div 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 href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</div> + +<p>{{Compat("css.at-rules.property")}}</p> + +<h2 id="See_also">另见</h2> + +<ul> + <li><a href="/zh-CN/docs/Web/API/CSS_Properties_and_Values_API">CSS属性与值 API</a></li> + <li><a href="/zh-CN/docs/Web/API/CSS_Painting_API">CSS 绘图 API</a></li> + <li><a href="/zh-CN/docs/Web/API/CSS_Typed_OM_API">CSS 类型对象模型</a></li> + <li><a href="/zh-CN/docs/Web/Houdini">CSS Houdini</a></li> +</ul> |