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---
title: CanvasGradient
slug: Web/API/CanvasGradient
translation_of: Web/API/CanvasGradient
---
<div>{{APIRef("Canvas")}}</div>
<p><code><strong>CanvasGradient</strong></code> 接口表示描述渐变的不透明对象。通过 {{domxref("CanvasRenderingContext2D.createLinearGradient()")}} 或 {{domxref("CanvasRenderingContext2D.createRadialGradient()")}} 的返回值得到.</p>
<h2 id="属性">属性</h2>
<p><em>不透明对象,没有暴露的属性.</em></p>
<h2 id="方法">方法</h2>
<p><em>没有继承的方法</em></p>
<dl>
<dt>{{domxref("CanvasGradient.addColorStop()")}}</dt>
<dd>添加一个由<code>偏移(offset)</code>和颜色(<code>color</code>)定义的断点到渐变中。如果偏移值不在0到1之间,将抛出<code>INDEX_SIZE_ERR错误,如果颜色值不能被解析为有效的</code>CSS颜色值 {{cssxref("<color>")}}<code>,将抛出SYNTAX_ERR</code>错误。</dd>
</dl>
<h2 id="Specifications" name="Specifications">标准</h2>
<table class="standard-table">
<thead>
<tr>
<th scope="col">标准</th>
<th scope="col">状态</th>
<th scope="col">备注</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName('HTML WHATWG', "the-canvas-element.html#canvasgradient", "CanvasGradient")}}</td>
<td>{{Spec2('HTML WHATWG')}}</td>
<td>同 {{Spec2('HTML Canvas 2D Context W3C')}}</td>
</tr>
<tr>
<td>{{SpecName('HTML Canvas 2D Context W3C', '#canvasgradient', 'CanvasGradient')}}</td>
<td>{{Spec2('HTML Canvas 2D Context W3C')}}</td>
<td>初始定义</td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
{{Compat("api.CanvasGradient")}}
<h2 id="请参考">请参考</h2>
<ul>
<li>创建方法在{{domxref("CanvasRenderingContext2D")}}.</li>
<li>{{HTMLElement("canvas")}} 元素及其有关接口{{domxref("HTMLCanvasElement")}}.</li>
</ul>
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