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---
title: GlobalEventHandlers.onmouseenter
slug: Web/API/GlobalEventHandlers/onmouseenter
translation_of: Web/API/GlobalEventHandlers/onmouseenter
---
<div>{{ ApiRef("HTML DOM") }}</div>
<div>{{domxref("GlobalEventHandlers")}}的<strong><code>onmouseenter</code></strong> 属性绑定 {{event("Event_handlers", "event handler")}} 后来处理{{event("mouseenter")}} 事件.</div>
<div> </div>
<p>元素绑定了监听事件后，当一个指针设备（通常是鼠标）移动到这个元素上时<code>mouseenter</code>事件将会被触发。</p>
<h2 id="语法">语法</h2>
<pre class="syntaxbox"><em><var>element</var></em>.onmouseenter = <em>handlerFunction</em>;
var <em>handlerFunction</em> = <em><var>element</var></em>.onmouseenter;
</pre>
<p><code>handlerFunction</code> 可以是 <code>null</code> 或者一个用于处理事件的<a href="/en-US/docs/Web/JavaScript/Reference/Functions" title="/en-US/docs/JavaScript/Reference/Functions_and_function_scope">JavaScript 函数</a> 。</p>
<h2 id="规格">规格</h2>
<table class="spectable standard-table">
<tbody>
<tr>
<th scope="col">规格</th>
<th scope="col">状态</th>
<th scope="col">注释</th>
</tr>
<tr>
<td>{{SpecName('HTML WHATWG','#handler-onmouseenter','onmouseenter')}}</td>
<td>{{Spec2('HTML WHATWG')}}</td>
<td> </td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
<p>{{Compat("api.GlobalEventHandlers.onmouseenter")}}</p>
<h2 id="同样可看">同样可看</h2>
<ul>
<li>{{event("mouseenter")}}</li>
<li><a href="/en-US/docs/Web/Guide/Events/Event_handlers" title="/en-US/docs/Web/Guide/DOM/Events/Event_handlers">DOM event handlers</a></li>
</ul>
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