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+---
+title: Geolocation.clearWatch()
+slug: Web/API/Geolocation/clearWatch
+translation_of: Web/API/Geolocation/clearWatch
+---
+<p>{{ APIref("Geolocation API") }}</p>
+
+<p><strong><code>Geolocation.clearWatch()</code></strong> 這個函式是用來取消   {{domxref("Geolocation.watchPosition()")}} 註冊的函式。</p>
+
+<h2 id="語法">語法</h2>
+
+<pre class="syntaxbox">navigator.geolocation.clearWatch(<em>id</em>);</pre>
+
+<h3 id="參數">參數</h3>
+
+<dl>
+ <dt><em>編號(id)</em></dt>
+ <dd>這個編號(ID) 是由 {{domxref("Geolocation.watchPosition()")}} 這個函式所回傳，當你不再需要收到位置更新時，你可以用此編號，取消 {{domxref("Geolocation.watchPosition()")}} 的註冊。</dd>
+</dl>
+
+<h2 id="範例">範例</h2>
+
+<pre class="brush: js">var id, target, option;
+
+function success(pos) {
+  var crd = pos.coords;
+
+  if (target.latitude === crd.latitude &amp;&amp; target.longitude === crd.longitude) {
+    console.log('Congratulation, you reach the target');
+    navigator.geolocation.clearWatch(id);
+  }
+};
+
+function error(err) {
+  console.warn('ERROR(' + err.code + '): ' + err.message);
+};
+
+target = {
+  latitude : 0,
+  longitude: 0,
+}
+
+options = {
+  enableHighAccuracy: false,
+  timeout: 5000,
+  maximumAge: 0
+};
+
+id = navigator.geolocation.watchPosition(success, error, options);
+</pre>
+
+<h2 id="規格">規格</h2>
+
+<table class="standard-table">
+ <thead>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+ </thead>
+ <tbody>
+  <tr>
+   <td>{{SpecName('Geolocation')}}</td>
+   <td>{{Spec2('Geolocation')}}</td>
+   <td>Initial specification.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="瀏覽器的相容性">瀏覽器的相容性</h2>
+
+<p>{{ CompatibilityTable() }}</p>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>5</td>
+   <td>{{CompatGeckoDesktop("1.9.1")}}</td>
+   <td>9</td>
+   <td>10.60<br>
+    Removed in 15.0<br>
+    Reintroduced in 16.0</td>
+   <td>5</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android</th>
+   <th>Chrome for Android</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>IE Mobile</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatUnknown()}}</td>
+   <td>{{CompatUnknown()}}</td>
+   <td>{{CompatGeckoMobile("4")}}</td>
+   <td>{{CompatUnknown()}}</td>
+   <td>10.60</td>
+   <td>{{CompatUnknown()}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="請參考">請參考</h2>
+
+<ul>
+ <li><a href="/en-US/docs/WebAPI/Using_geolocation" title="/en-US/docs/WebAPI/Using_geolocation">Using geolocation</a></li>
+ <li>{{domxref("Geolocation")}}</li>
+ <li>{{domxref("Geolocation.watchPosition()")}}</li>
+ <li>{{domxref("Geolocation.getCurrentPosition()")}}</li>
+</ul>