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---
title: resize
slug: Web/CSS/resize
tags:
- resize
- 调整大小
translation_of: Web/CSS/resize
---
<div>{{CSSRef}}</div>
<h2 id="概述">概述</h2>
<p> <strong><code>resize</code></strong> CSS 属性允许你控制一个元素的可调整大小性。</p>
<p>{{cssinfo}}</p>
<h2 id="语法">语法</h2>
<pre class="brush: css">/* Keyword values */
resize: none;
resize: both;
resize: horizontal;
resize: vertical;
resize: block;
resize: inline;
/* Global values */
resize: inherit;
resize: initial;
resize: unset;
</pre>
<h3 id="取值">取值</h3>
<dl>
<dt><code>none</code></dt>
<dd>元素不能被用户缩放。</dd>
<dt><code>both</code></dt>
<dd>允许用户在水平和垂直方向上调整元素的大小。</dd>
<dt><code>horizontal</code></dt>
<dd>允许用户在水平方向上调整元素的大小。</dd>
<dt><code>vertical</code></dt>
<dd>允许用户在垂直方向上调整元素的大小。</dd>
<dt><code>block</code> {{experimental_inline}}</dt>
<dd>Depending on the {{cssxref("writing-mode")}} and {{cssxref("direction")}} value, the element displays a mechanism for allowing the user to resize the element either horizontally or vertically in block direction.</dd>
<dt><code>inline</code> {{experimental_inline}}</dt>
<dd>Depending on the {{cssxref("writing-mode")}} and {{cssxref("direction")}} value, the element displays a mechanism for allowing the user to resize the element either horizontally or vertically in inline direction.</dd>
</dl>
<div class="note"><strong>Note:</strong> 如果一个block元素的 {{cssxref("overflow")}} 属性被设置成了<code>visible</code>，那么<code>resize</code>属性对该元素无效。</div>
<h3 id="标准语法">标准语法</h3>
<pre class="syntaxbox">{{csssyntax}}</pre>
<h2 id="例子">例子</h2>
<h3 id="Disabling_resizability_of_textareas">Disabling resizability of textareas</h3>
<h4 id="CSS">CSS</h4>
<p>{{HTMLElement("textarea")}} 元素在{{gecko("2.0")}} (Firefox 4)中默认是可以进行缩放的. 你可以通过下面的CSS代码来重写这种行为：</p>
<pre class="brush: css">textarea.example {
resize: none; /* disables resizability */
}
</pre>
<h4 id="HTML">HTML</h4>
<pre class="brush: html"><textarea class="example">Type some text here.</textarea></pre>
<h4 id="Result">Result</h4>
<p>{{EmbedLiveSample("Disabling_resizability_of_textareas","200","100")}}</p>
<h3 id="Using_resize_with_arbitrary_elements">Using resize with arbitrary elements</h3>
<p>You can use the resize property to make any element resizable. In the example below, a resizable {{HTMLElement("div")}} box contains a resizable paragraph ({{HTMLElement("p")}} element):</p>
<h4 id="CSS_2">CSS</h4>
<pre class="brush: css">.resizable {
resize: both;
overflow: scroll;
border: 1px solid black;
}
div {
height: 300px;
width: 300px;
}
p {
height: 200px;
width: 200px;
}
</pre>
<h4 id="HTML_2">HTML</h4>
<pre class="brush: html"><div class="resizable">
<p class="resizable">
This paragraph is resizable, because the CSS resize property is set to 'both' on this
element.
</p>
</div>
</pre>
<h4 id="Result_2">Result</h4>
<p>{{EmbedLiveSample("Using_resize_with_arbitrary_elements","450","450")}}</p>
<h2 id="Specifications">Specifications</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('CSS Logical Properties', '#resize', 'resize')}}</td>
<td>{{Spec2('CSS Logical Properties')}}</td>
<td>Adds the values <code>block</code> and <code>inline</code>.</td>
</tr>
<tr>
<td>{{SpecName('CSS3 Basic UI', '#resize', 'resize')}}</td>
<td>{{Spec2('CSS3 Basic UI')}}</td>
<td>Initial definition</td>
</tr>
</tbody>
</table>
<h2 id="Browser_compatibility">Browser compatibility</h2>
<div>{{CompatibilityTable}}</div>
<div id="compat-desktop">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Chrome</th>
<th>Firefox (Gecko)</th>
<th>Internet Explorer</th>
<th>Opera</th>
<th>Safari (WebKit)</th>
</tr>
<tr>
<td>Basic support (on {{HTMLElement("textarea")}})</td>
<td>1.0</td>
<td>{{CompatGeckoDesktop("2.0")}}{{property_prefix("-moz")}}</td>
<td>{{CompatNo}}</td>
<td>12.1</td>
<td>3.0 (522)</td>
</tr>
<tr>
<td>On any block-level and replaced element, table cell, and inline block element (unless {{cssxref("overflow")}} is <code>visible</code>)</td>
<td>4.0</td>
<td>{{CompatGeckoDesktop("5.0")}}[1]</td>
<td>{{CompatNo}}</td>
<td>15</td>
<td>4.0</td>
</tr>
</tbody>
</table>
</div>
<div id="compat-mobile">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Android</th>
<th>Firefox Mobile (Gecko)</th>
<th>IE Phone</th>
<th>Opera Mobile</th>
<th>Safari Mobile</th>
</tr>
<tr>
<td>Basic support (on {{HTMLElement("textarea")}})</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
</tr>
<tr>
<td>On any block-level and replaced element, table cell, and inline block element (unless {{cssxref("overflow")}} is <code>visible</code>)</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
</tr>
</tbody>
</table>
</div>
<p>[1] <code>resize</code> doesn't have any effect on {{HTMLElement("iframe")}} (cf. {{bug(680823)}})</p>
<h2 id="See_also">See also</h2>
<ul>
<li>{{HTMLElement("textarea")}}</li>
</ul>
|
