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+---
+title: WebGLRenderingContext.isBuffer()
+slug: Web/API/WebGLRenderingContext/isBuffer
+translation_of: Web/API/WebGLRenderingContext/isBuffer
+---
+<div>{{APIRef("WebGL")}}</div>
+
+<p><strong><code>WebGLRenderingContext.isBuffer() </code></strong>是 <a href="/en-US/docs/Web/API/WebGL_API">WebGL API</a> 的方法之一。如果传递的 {{domxref("WebGLBuffer")}} 有效则返回 true，否则返回 false。</p>
+
+<h2 id="句法">句法</h2>
+
+<pre class="syntaxbox">GLboolean <var>gl</var>.isBuffer(<var>buffer</var>);
+</pre>
+
+<h3 id="参数">参数</h3>
+
+<dl>
+ <dt>buffer (缓冲区)</dt>
+ <dd>需要检查的 {{domxref("WebGLBuffer")}} 。</dd>
+</dl>
+
+<h3 id="返回值">返回值</h3>
+
+<p>{{domxref("GLboolean")}} 指示 buffer 是否可用。</p>
+
+<h2 id="示例">示例</h2>
+
+<h3 id="创建一个缓冲区_(buffer)">创建一个缓冲区 (buffer)</h3>
+
+<pre class="brush: js">var canvas = document.getElementById("canvas");
+var gl = canvas.getContext("webgl");
+var buffer = gl.createBuffer();
+
+gl.isBuffer(buffer);
+</pre>
+
+<h2 id="规范">规范</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('WebGL', "#5.14.5", "isBuffer")}}</td>
+   <td>{{Spec2('WebGL')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('OpenGL ES 2.0', "glIsBuffer.xml", "glIsBuffer")}}</td>
+   <td>{{Spec2('OpenGL ES 2.0')}}</td>
+   <td>Man page of the OpenGL API.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+<p>{{CompatibilityTable}}</p>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Edge</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatChrome("9")}}</td>
+   <td>12</td>
+   <td>{{CompatGeckoDesktop("2.0")}}</td>
+   <td>11</td>
+   <td>{{CompatOpera("12")}}</td>
+   <td>{{CompatSafari("5.1")}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android</th>
+   <th>Chrome for Android</th>
+   <th>Edge</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>Firefox OS</th>
+   <th>IE Mobile</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatUnknown}}</td>
+   <td>25</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatGeckoMobile("2.0")}}</td>
+   <td>1.0</td>
+   <td>{{CompatUnknown}}</td>
+   <td>12</td>
+   <td>8.0</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="另见">另见</h2>
+
+<ul>
+ <li>{{domxref("WebGLRenderingContext.bindBuffer()")}}</li>
+ <li>{{domxref("WebGLRenderingContext.createBuffer()")}}</li>
+ <li>{{domxref("WebGLRenderingContext.deleteBuffer()")}}</li>
+ <li>Other buffers: {{domxref("WebGLFramebuffer")}}, {{domxref("WebGLRenderbuffer")}}</li>
+</ul>