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---
title: DNT
slug: Web/HTTP/Headers/DNT
translation_of: Web/HTTP/Headers/DNT
---
<div>{{HTTPSidebar}}</div>
<p><strong><code>DNT</code></strong>（<strong>D</strong>o <strong>N</strong>ot <strong>T</strong>rack，<strong>請勿追蹤</strong>）請求標頭表明用戶針對追蹤程式的設定。它能讓用戶表達自己相較於個人化設定，更在乎個人隱私。</p>
<table class="properties">
<tbody>
<tr>
<th scope="row">標頭類型</th>
<td>{{Glossary("Request header")}}</td>
</tr>
<tr>
<th scope="row">{{Glossary("Forbidden header name")}}</th>
<td>是</td>
</tr>
</tbody>
</table>
<h2 id="語法">語法</h2>
<pre class="syntaxbox">DNT: 0
DNT: 1
</pre>
<h2 id="指令">指令</h2>
<dl>
<dt>0</dt>
<dd>用戶允許目標網站追蹤之。</dd>
<dt>1</dt>
<dd>用戶不允許目標網站追蹤。</dd>
</dl>
<h2 id="示例">示例</h2>
<h3 id="請參考_JavaScript_的_Do_Not_Track">請參考 JavaScript 的 Do Not Track</h3>
<p>用戶的 DNT 設定也能透過 JavaScript 的 {{domxref("Navigator.doNotTrack")}} 設定檢查：</p>
<pre class="brush: js">navigator.doNotTrack; // "0" or "1"</pre>
<h2 id="規範">規範</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="col">規範</th>
<th scope="col">狀態</th>
<th scope="col">註解</th>
</tr>
<tr>
<td>{{SpecName('Tracking','#dnt-header-field', 'DNT Header Field for HTTP Requests')}}</td>
<td>{{Spec2("Tracking")}}</td>
<td>初始定義</td>
</tr>
</tbody>
</table>
<h2 id="瀏覽器相容性">瀏覽器相容性</h2>
<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>
<p>{{Compat("http.headers.DNT")}}</p>
<h2 id="參見">參見</h2>
<ul>
<li>{{domxref("Navigator.doNotTrack")}}</li>
<li>{{HTTPHeader("Tk")}} 標頭</li>
<li>維基百科的<a href="https://zh.wikipedia.org/zh-tw/%E8%AF%B7%E5%8B%BF%E8%BF%BD%E8%B8%AA">Do Not Track </a></li>
<li><a href="https://www.eff.org/deeplinks/2011/02/what-does-track-do-not-track-mean">What Does the "Track" in "Do Not Track" Mean? – EFF</a></li>
<li><a href="http://donottrack.us/">donottrack.us</a></li>
<li>瀏覽器設定 DNT 的幫助：
<ul>
<li><a href="https://www.mozilla.org/zh-tw/firefox/dnt/">Firefox</a></li>
<li><a href="https://support.google.com/chrome/answer/2790761">Chrome</a></li>
</ul>
</li>
</ul>
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