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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
---
<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>
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