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---
title: ImageData.height
slug: Web/API/ImageData/height
translation_of: Web/API/ImageData/height
---
<p>{{APIRef("Canvas API")}}</p>
<p>只读的 <code><strong>ImageData.height</strong></code> 属性,返回在图像数据对象中的行的数量。</p>
<h2 id="语法">语法</h2>
<pre class="syntaxbox"><em>imagedata</em>.height
</pre>
<h2 id="示例">示例</h2>
<pre class="brush: js language-js">var imagedata = new ImageData(100, 100);
imagedata.height; // 100
</pre>
<h2 id="Specification" name="Specification">规范描述</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="col">Specification</th>
<th scope="col">Status</th>
<th scope="col">Comment</th>
</tr>
<tr>
<td>{{SpecName('HTML WHATWG', 'scripting.html#dom-imagedata-height', 'ImageData.height')}}</td>
<td>{{Spec2('HTML WHATWG')}}</td>
<td> </td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
{{Compat("api.ImageData.height")}}
<h2 id="参见">参见</h2>
<ul>
<li>{{domxref("ImageData.width")}}</li>
</ul>
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