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+---
+title: GlobalEventHandlers.onselectionchange
+slug: Web/API/GlobalEventHandlers/onselectionchange
+translation_of: Web/API/GlobalEventHandlers/onselectionchange
+---
+<div>{{ApiRef('DOM')}}{{SeeCompatTable}}</div>
+
+<p><code><strong>GlobalEventHandlers.onselectionchange</strong></code>  属性表示当一个 {{event("selectstart")}} 事件被触发，比如在页面上选中文字变化时，会执行绑定的事件处理器</p>
+
+<h2 id="Syntax">Syntax</h2>
+
+<pre class="syntaxbox"><em>obj</em>.onselectionchange = <em>function</em>;
+</pre>
+
+<h2 id="Example">Example</h2>
+
+<pre class="brush: js">var selection;
+
+document.onselectionchange = function() {
+  console.log('New selection made');
+  selection = document.getSelection();
+};</pre>
+
+<p>完整例子请参阅<a href="https://github.com/chrisdavidmills/selection-api-examples/#key-quote-generator-see-it-running-live">Key quote generator</a> demo.</p>
+
+<h2 id="Specifications">Specifications</h2>
+
+<table class="spectable standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('Selection API','#dom-globaleventhandlers-onselectionchange','GlobalEventHandlers.onselectionchange')}}</td>
+   <td>{{Spec2('Selection API')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility">Browser compatibility</h2>
+
+<p>{{CompatibilityTable}}</p>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Firefox (Gecko)</th>
+   <th>Chrome</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatGeckoDesktop(43)}}<sup>[1]</sup><br>
+    {{CompatGeckoDesktop(52)}}<sup>[2]</sup></td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>1.3</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>Android</th>
+   <th>IE Mobile</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+  </tr>
+  <tr>
+   <td><code>onselectionchange</code></td>
+   <td>{{CompatGeckoMobile(43)}}<sup>[1]</sup><br>
+    {{CompatGeckoMobile(52)}}<sup>[2]</sup></td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<p>[1] This is implemented behind the <code>dom.select_events.enabled</code> preference, which defaults to <code>false</code> except on Nightly.</p>
+
+<p>[2] This is now fully enabled on Firefox 52 release version.</p>
+
+<h2 id="See_also">See also</h2>
+
+<ul>
+ <li>{{event("selectionchange")}}</li>
+ <li>{{domxref("GlobalEventHandlers.onselectstart")}}</li>
+</ul>