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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/css/@media/aspect-ratio | |
| parent | 8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff) | |
| download | translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.tar.gz translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.tar.bz2 translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.zip | |
initial commit
Diffstat (limited to 'files/zh-cn/web/css/@media/aspect-ratio')
| -rw-r--r-- | files/zh-cn/web/css/@media/aspect-ratio/index.html | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/files/zh-cn/web/css/@media/aspect-ratio/index.html b/files/zh-cn/web/css/@media/aspect-ratio/index.html new file mode 100644 index 0000000000..d18fb02b2b --- /dev/null +++ b/files/zh-cn/web/css/@media/aspect-ratio/index.html @@ -0,0 +1,120 @@ +--- +title: aspect-ratio +slug: Web/CSS/@media/aspect-ratio +translation_of: Web/CSS/@media/aspect-ratio +--- +<div>{{cssref}}</div> + +<p><strong><code>aspect-ratio</code></strong> <a href="/zh-CN/docs/CSS">CSS</a> <a href="/zh-CN/docs/Web/CSS/Media_Queries/Using_media_queries#Media_features">媒体属性</a> 可以用来测试 {{glossary("viewport")}} 的宽高比。</p> + +<h2 id="语法">语法</h2> + +<p>宽高比属性被指定为{{cssxref("<ratio>")}}值来代表viewport的宽高比。其为一个范围，这意味着你可以使用<strong><code>min-aspect-ratio</code></strong>和<code><strong>max-aspect-ratio</strong></code>分别查询最小和最大的值。</p> + +<h2 id="例子">例子</h2> + +<p>下面的例子包含一个 {{htmlElement("iframe")}} ，拥有它自身的viewport。调整的<code><iframe></code>宽高来观察<code>aspect-ratio</code>的变化。</p> + +<h3 id="HTML">HTML</h3> + +<pre class="brush: html notranslate"><div id='inner'> + Watch this element as you resize your viewport's width and height. +</div> +</pre> + +<h3 id="CSS">CSS</h3> + +<pre class="brush: css notranslate">/* 最小宽高比 */ +@media (min-aspect-ratio: 8/5) { + div { + background: #9af; /* blue */ + } +} + +/* 最大宽高比 */ +@media (max-aspect-ratio: 3/2) { + div { + background: #9ff; /* cyan */ + } +} + +/* 明确的宽高比, 放在最下部防止同时满足条件时的覆盖*/ +@media (aspect-ratio: 1/1) { + div { + background: #f9a; /* red */ + } +} +</pre> + +<div class="hidden"> +<h2 id="_Example">_Example</h2> + +<p>used iframe and DataURL to enable this iframe could resize</p> + +<h3 id="HTML_2">HTML</h3> + +<pre class="brush: html notranslate"><label id="wf" for="w">width:165</label> +<input id="w" name="w" type="range" min="100" max="250" step="5" value="165"> +<label id="hf" for="w">height:165</label> +<input id="h" name="h" type="range" min="100" max="250" step="5" value="165"> + +<iframe id="outer" src="data:text/html,<style> @media (min-aspect-ratio: 8/5) { div { background: %239af; } } @media (max-aspect-ratio: 3/2) { div { background: %239ff; } } @media (aspect-ratio: 1/1) { div { background: %23f9a; } }</style><div id='inner'> Watch this element as you resize your viewport's width and height.</div>"> + +</iframe> +</pre> + +<h3 id="CSS_2">CSS</h3> + +<pre class="brush: css notranslate">iframe{ + display:block; +}</pre> + +<h3 id="JavaScript">JavaScript</h3> + +<pre class="brush: js notranslate">outer.style.width=outer.style.height="165px" + +w.onchange=w.oninput=function(){ + outer.style.width=w.value+"px" + wf.textContent="width:"+w.value +} +h.onchange=h.oninput=function(){ + outer.style.height=h.value+"px" + hf.textContent="height:"+h.value +}</pre> +</div> + +<h3 id="结果">结果</h3> + +<div style="overflow: auto;"> +<p>{{ EmbedLiveSample('_Example', '300px', '400px') }}</p> +</div> + +<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('CSS4 Media Queries', '#aspect-ratio', 'aspect-ratio')}}</td> + <td>{{Spec2('CSS4 Media Queries')}}</td> + <td>No change.</td> + </tr> + <tr> + <td>{{SpecName('CSS3 Media Queries', '#aspect-ratio', 'aspect-ratio')}}</td> + <td>{{Spec2('CSS3 Media Queries')}}</td> + <td>Initial definition.</td> + </tr> + </tbody> +</table> + +<h2 id="浏览器兼容性">浏览器兼容性</h2> + + + +<p>{{Compat("css.at-rules.media.aspect-ratio")}}</p> |