From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:40:17 -0500
Subject: initial commit

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 .../performancetiming/navigationstart/index.html   | 47 ++++++++++++++++++++++
 1 file changed, 47 insertions(+)
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(limited to 'files/zh-cn/web/api/performancetiming/navigationstart')

diff --git a/files/zh-cn/web/api/performancetiming/navigationstart/index.html b/files/zh-cn/web/api/performancetiming/navigationstart/index.html
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+---
+title: PerformanceTiming.navigationStart
+slug: Web/API/PerformanceTiming/navigationStart
+translation_of: Web/API/PerformanceTiming/navigationStart
+---
+<p>{{APIRef("Navigation Timing")}}</p>
+
+<h2 id="概要">概要</h2>
+
+<p><code><strong>PerformanceTiming</strong></code><strong><code>.navigationStart</code></strong> 是一个返回代表一个时刻的 <code>unsigned long long</code> 型只读属性，为紧接着在相同的浏览环境下卸载前一个文档结束之时的 Unix毫秒时间戳。如果没有上一个文档，则它的值相当于 {{domxref("PerformanceTiming.fetchStart")}}。</p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox"><em>time</em> = <em>performanceTiming</em>.navigationStart;</pre>
+
+<h2 id="标准">标准</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('Navigation Timing', '#dom-performancetiming-navigationstart', 'PerformanceTiming.navigationStart')}}</td>
+   <td>{{Spec2('Navigation Timing')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+<div>
+<div>
+
+
+<p>{{Compat("api.PerformanceTiming.navigationStart")}}</p>
+</div>
+</div>
+
+<h2 id="参见">参见</h2>
+
+<ul>
+ <li>它属于 {{domxref("PerformanceTiming")}} 接口。</li>
+</ul>
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