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---
title: feFuncA
slug: Web/SVG/Element/feFuncA
tags:
  - NeedsExample
  - SVG
translation_of: Web/SVG/Element/feFuncA
---
<div>{{SVGRef}}</div>

<p><a href="/zh-CN/docs/Web/SVG">SVG</a> 滤镜 <strong><code>&lt;feFuncA&gt;</code></strong> 为它的父元素 {{SVGElement("feComponentTransfer")}} 的输入图形的透明度(alpha)组件定义了变换函数。</p>

<h2 id="用法">用法</h2>

<p>{{svginfo}}</p>

<h2 id="属性">属性</h2>

<h3 id="全局属性">全局属性</h3>

<ul>
 <li><a href="/en-US/docs/Web/SVG/Attribute#Core_attributes">核心属性</a></li>
 <li><a href="/en-US/docs/Web/SVG/Attribute#Transfer_function_attributes">Transfer function attributes</a></li>
</ul>

<h3 id="专有属性">专有属性</h3>

<p class="syntaxbox"><em></em></p>

<h2 id="DOM_接口">DOM 接口</h2>

<p>该元素实现了 {{domxref("SVGFEFuncAElement")}} 接口。</p>

<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("Filters 1.0", "#feFuncAElement", "&lt;feFuncA&gt;")}}</td>
   <td>{{Spec2("Filters 1.0")}}</td>
   <td>No change</td>
  </tr>
  <tr>
   <td>{{SpecName("SVG1.1", "filters.html#feFuncAElement", "&lt;feFuncA&gt;")}}</td>
   <td>{{Spec2("SVG1.1")}}</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("svg.elements.feFuncA")}}</p>

<h2 id="参见">参见</h2>

<ul>
 <li>{{ SVGElement("filter") }}</li>
 <li>{{ SVGElement("animate") }}</li>
 <li>{{ SVGElement("set") }}</li>
 <li>{{ SVGElement("feComponentTransfer")}}</li>
 <li>{{ SVGElement("feFuncR") }}</li>
 <li>{{ SVGElement("feFuncB") }}</li>
 <li>{{ SVGElement("feFuncG") }}</li>
 <li><a href="/en/SVG/Tutorial/Filter_effects">SVG 教程:滤镜效果</a></li>
</ul>