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authorMasahiro FUJIMOTO <mfujimot@gmail.com>2022-02-22 01:14:08 +0900
committerMasahiro FUJIMOTO <mfujimot@gmail.com>2022-03-02 23:38:54 +0900
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Performance インターフェイスのメソッドの記事を移行
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+---
+title: performance.setResourceTimingBufferSize()
+slug: Web/API/Performance/setResourceTimingBufferSize
+tags:
+ - API
+ - Web パフォーマンス
+ - メソッド
+ - リファレンス
+translation_of: Web/API/Performance/setResourceTimingBufferSize
+---
+<div>{{APIRef("Resource Timing API")}}</div>
+
+<p><strong><code>setResourceTimingBufferSize()</code></strong> メソッドは、ブラウザのリソースタイミングバッファサイズを、指定された数の "<code>resource</code>" {{domxref("PerformanceEntry.entryType","performance entry type")}} オブジェクトに設定します。</p>
+
+<p>ブラウザの推奨リソースタイミングバッファサイズは少なくとも 150 {{domxref("PerformanceEntry","performance entry")}} オブジェクトです。</p>
+
+<p>{{AvailableInWorkers}}</p>
+
+<h2 id="構文">構文</h2>
+
+<pre class="syntaxbox"><em>performance</em>.setResourceTimingBufferSize(maxSize);
+</pre>
+
+<h3 id="引数">引数</h3>
+
+<dl>
+ <dt>maxSize</dt>
+ <dd>ブラウザがパフォーマンスエントリバッファに保持する必要がある {{domxref("PerformanceEntry","performance entry")}} オブジェクトの最大数を表す <code>number</code>。</dd>
+</dl>
+
+<h3 id="Return_Value" name="Return_Value">戻り値</h3>
+
+<dl>
+ <dt>なし</dt>
+ <dd>このメソッドには戻り値はありません。</dd>
+</dl>
+
+<h2 id="例">例</h2>
+
+<pre class="brush: js">function setResourceTimingBufferSize(maxSize) {
+ if (performance === undefined) {
+ log("Browser does not support Web Performance");
+ return;
+ }
+ var supported = typeof performance.setResourceTimingBufferSize == "function";
+ if (supported) {
+ log("... Performance.setResourceTimingBufferSize() = Yes");
+ performance.setResourceTimingBufferSize(maxSize);
+ } else {
+ log("... Performance.setResourceTimingBufferSize() = NOT supported");
+ }
+}
+</pre>
+
+<h2 id="仕様">仕様</h2>
+
+<table class="standard-table">
+ <tbody>
+ <tr>
+ <th scope="col">仕様書</th>
+ <th scope="col">ステータス</th>
+ <th scope="col">コメント</th>
+ </tr>
+ <tr>
+ <td>{{SpecName('Resource Timing', '#dom-performance-setresourcetimingbuffersize', 'setResourceTimingBufferSize()')}}</td>
+ <td>{{Spec2('Resource Timing')}}</td>
+ <td>初期定義</td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="ブラウザの互換性">ブラウザの互換性</h2>
+
+<div>
+<p>{{Compat("api.Performance.setResourceTimingBufferSize")}}</p>
+</div>