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---
title: WebGLRenderingContext.getAttribLocation()
slug: Web/API/WebGLRenderingContext/getAttribLocation
translation_of: Web/API/WebGLRenderingContext/getAttribLocation
---
<div>{{APIRef("WebGL")}}</div>
<p><strong><code>WebGLRenderingContext.getAttribLocation()</code></strong> 方法返回了给定{{domxref("WebGLProgram")}}对象中某属性的下标指向位置。</p>
<h2 id="语法">语法</h2>
<pre class="syntaxbox">GLint <var>gl</var>.getAttribLocation(<var>program</var>, <var>name</var>);
</pre>
<h3 id="参数">参数</h3>
<dl>
<dt>program</dt>
<dd>一个包含了属性参数的{{domxref("WebGLProgram")}} 对象。</dd>
<dt>name</dt>
<dd>需要获取下标指向位置的 {{domxref("DOMString")}} 属性参数名</dd>
</dl>
<h3 id="返回值">返回值</h3>
<p>表明属性位置的下标 {{domxref("GLint")}} 数字，如果找不到该属性则返回-1。</p>
<h2 id="示例">示例</h2>
<pre class="brush: js">gl.getAttribLocation(program, 'vColor');
</pre>
<h2 id="规范">规范</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="col">规范</th>
<th scope="col">状态</th>
<th scope="col">注释</th>
</tr>
<tr>
<td>{{SpecName('WebGL', "#5.14.10", "getAttribLocation")}}</td>
<td>{{Spec2('WebGL')}}</td>
<td>原始定义.</td>
</tr>
<tr>
<td>{{SpecName('OpenGL ES 2.0', "glGetAttribLocation.xml", "glGetAttribLocation")}}</td>
<td>{{Spec2('OpenGL ES 2.0')}}</td>
<td>OpenGL API的主页.</td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>
<p>{{Compat("api.WebGLRenderingContext.getAttribLocation")}}</p>
<h2 id="相关资料">相关资料</h2>
<ul>
<li>{{domxref("WebGLRenderingContext.getUniformLocation()")}}</li>
</ul>
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