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authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
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+---
+title: GlobalEventHandlers.ontouchstart
+slug: Web/API/GlobalEventHandlers/ontouchstart
+translation_of: Web/API/GlobalEventHandlers/ontouchstart
+---
+<div>{{ApiRef("HTML DOM")}}</div>
+
+<p>{{event("touchstart")}} 事件的{{domxref("GlobalEventHandlers","全局事件处理器")}}.</p>
+
+<p>{{SeeCompatTable}}</p>
+
+<div class="note">
+<p><strong>备注:</strong> 这个属性尚未正式标准化。它被定义在{{SpecName('Touch Events 2')}} {{Spec2('Touch Events 2')}} 规格中,但并没有被定义在 {{SpecName('Touch Events')}} {{Spec2('Touch Events')}}中。这个属性尚未被完成实现。</p>
+</div>
+
+<h2 id="Syntax" name="Syntax">语法</h2>
+
+<pre class="eval">var startHandler = someElement.ontouchstart;
+</pre>
+
+<h3 id="Return_Value" name="Return_Value">返回值</h3>
+
+<dl>
+ <dt><code>startHandler</code></dt>
+ <dd><code>someElement的touchstart事件处理函数</code>.</dd>
+</dl>
+
+<h2 id="例子">例子</h2>
+
+<p>这个例子展示了使用ontouchstart属性的两种方法。</p>
+
+<pre class="brush: js">&lt;html&gt;
+&lt;script&gt;
+function startTouch(ev) {
+ // 处理事件
+}
+function init() {
+ var el=document.getElementById("target1");
+ el.ontouchstart = startTouch;
+}
+&lt;/script&gt;
+&lt;body onload="init();"&gt;
+&lt;div id="target1"&gt; Touch me ... &lt;/div&gt;
+&lt;div id="target2" ontouchstart="startTouch(event)"&gt; Touch me ... &lt;/div&gt;
+&lt;/body&gt;
+&lt;/html&gt;
+</pre>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+ <tr>
+ <th scope="col">规范</th>
+ <th scope="col">状态</th>
+ <th scope="col">评论</th>
+ </tr>
+ <tr>
+ <td>{{SpecName('Touch Events 2','#widl-GlobalEventHandlers-ontouchstart')}}</td>
+ <td>{{Spec2('Touch Events 2')}}</td>
+ <td>Non-stable version.</td>
+ </tr>
+ </tbody>
+</table>
+
+<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 (WebKit)</th>
+ </tr>
+ <tr>
+ <td>Basic support</td>
+ <td>{{CompatChrome(18.0)}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+ <tr>
+ <th>Feature</th>
+ <th>Android</th>
+ <th>Android Webview</th>
+ <th>Chrome for Android</th>
+ <th>Firefox Mobile (Gecko)</th>
+ <th>Firefox OS</th>
+ <th>IE Mobile</th>
+ <th>Opera Mobile</th>
+ <th>Safari Mobile</th>
+ </tr>
+ <tr>
+ <td>Basic support</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="相关链接">相关链接</h2>
+
+<ul>
+ <li>{{ event("touchstart") }}</li>
+</ul>