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+---
+title: pageshow
+slug: Web/API/Window/pageshow_event
+translation_of: Web/API/Window/pageshow_event
+original_slug: Web/Events/pageshow
+---
+<p>当一条会话历史记录被执行的时候将会触发页面显示(pageshow)事件。(这包括了后退/前进按钮操作,同时也会在onload 事件触发后初始化页面时触发)</p>
+
+<h2 id="基本信息">基本信息</h2>
+
+<dl>
+ <dt style="float: left; text-align: right; width: 120px;">规范</dt>
+ <dd style="margin: 0 0 0 120px;"><a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/history.html#event-pageshow">HTML5</a></dd>
+ <dt style="float: left; text-align: right; width: 120px;">接口</dt>
+ <dd style="margin: 0 0 0 120px;"><a href="/en-US/docs/Web/API/PageTransitionEvent">PageTransitionEvent</a></dd>
+ <dt style="float: left; text-align: right; width: 120px;">事件冒泡</dt>
+ <dd style="margin: 0 0 0 120px;">No</dd>
+ <dt style="float: left; text-align: right; width: 120px;">事件取消</dt>
+ <dd style="margin: 0 0 0 120px;">No</dd>
+ <dt style="float: left; text-align: right; width: 120px;">事件源</dt>
+ <dd style="margin: 0 0 0 120px;">Document (dispatched on Window)</dd>
+ <dt style="float: left; text-align: right; width: 120px;">默认操作</dt>
+ <dd style="margin: 0 0 0 120px;">None</dd>
+</dl>
+
+<h2 id="属性">属性</h2>
+
+<table class="standard-table">
+ <thead>
+ <tr>
+ <th scope="col">Property</th>
+ <th scope="col">Type</th>
+ <th scope="col">Description</th>
+ </tr>
+ </thead>
+ <tbody>
+ <tr>
+ <td><code>target</code> {{readonlyInline}}</td>
+ <td>{{domxref("EventTarget")}}</td>
+ <td>The event target (the topmost target in the DOM tree).</td>
+ </tr>
+ <tr>
+ <td><code>type</code> {{readonlyInline}}</td>
+ <td>{{domxref("DOMString")}}</td>
+ <td>The type of event.</td>
+ </tr>
+ <tr>
+ <td><code>bubbles</code> {{readonlyInline}}</td>
+ <td>{{jsxref("Boolean")}}</td>
+ <td>Whether the event normally bubbles or not.</td>
+ </tr>
+ <tr>
+ <td><code>cancelable</code> {{readonlyInline}}</td>
+ <td>{{jsxref("Boolean")}}</td>
+ <td>Whether the event is cancellable or not.</td>
+ </tr>
+ <tr>
+ <td><code>persisted</code> {{readonlyInline}}</td>
+ <td>{{jsxref("boolean")}}</td>
+ <td>表示网页是否是来自缓存.</td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="示例">示例</h2>
+
+<p>以下示例将会在控制台打印由前进/后退按钮以及load事件触发后引起的pageshow事件:</p>
+
+<pre>window.addEventListener('pageshow', function(event) {
+    console.log('after , pageshow :',event);
+});
+
+
+window.addEventListener('load', function() {
+ console.log('before');
+});
+</pre>
+
+
+
+
+
+<p>不规范的写法,你同样可以将这个事件当做一个属性添加到body标签,类似于onload</p>
+
+<pre>&lt;body onload="myonload()" onpageshow="mypageshowcode()"&gt;</pre>
+
+<h2 id="浏览器兼容性">浏览器兼容性</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>{{CompatChrome("4")}}</td>
+ <td>{{CompatGeckoDesktop("1.8")}}</td>
+ <td>11</td>
+ <td>15</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>Firefox Mobile (Gecko)</th>
+ <th>IE Mobile</th>
+ <th>Opera Mobile</th>
+ <th>Safari Mobile</th>
+ </tr>
+ <tr>
+ <td>Basic support</td>
+ <td>2.3</td>
+ <td>{{CompatUnknown()}}</td>
+ <td>11</td>
+ <td>35</td>
+ <td>5.1</td>
+ </tr>
+ </tbody>
+</table>
+
+
+</div>
+
+<h2 id="相关事件">相关事件</h2>
+
+<ul>
+ <li><a href="/en-US/docs/Mozilla_event_reference/pagehide"><code>pagehide</code></a></li>
+ <li><a href="/en-US/docs/Using_Firefox_1.5_caching#pageshow_event">Using Firefox 1.5 caching — pageshow event</a></li>
+</ul>