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+---
+title: Performance.timing
+slug: Web/API/Performance/timing
+tags:
+  - API
+  - Navigation Timing
+  - Performance
+  - Property
+  - Read-only
+  - 唯讀
+  - 屬性
+  - 效能
+translation_of: Web/API/Performance/timing
+original_slug: Web/API/Performance.timing
+---
+<p>{{APIRef("Performance")}}</p>
+
+<h2 id="摘要">摘要</h2>
+
+<p><code><strong>Performance</strong></code><strong><code>.timing</code></strong> 是唯讀的屬性，傳回的 {{domxref("PerformanceTiming")}} 物件當中包含了效能與時間延遲相關的資訊。</p>
+
+<h2 id="語法">語法</h2>
+
+<pre class="syntaxbox"><em>timingInfo</em> = <em>performance</em>.timing;</pre>
+
+<h2 id="規格">規格</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">規格</th>
+   <th scope="col">狀態</th>
+   <th scope="col">備註</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('Navigation Timing', '#sec-window.performance-attribute', 'Performance.timing')}}</td>
+   <td>{{Spec2('Navigation Timing')}}</td>
+   <td>初步定義</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="瀏覽器支援狀況">瀏覽器支援狀況</h2>
+
+<div>
+<div>
+
+
+<p>{{Compat("api.Performance.timing")}}</p>
+</div>
+</div>
+
+<h2 id="參照">參照</h2>
+
+<ul>
+ <li>屬於 {{domxref("Performance")}} 界面的一部份</li>
+</ul>