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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.onmouseover
+slug: Web/API/GlobalEventHandlers/onmouseover
+translation_of: Web/API/GlobalEventHandlers/onmouseover
+---
+<div>{{ ApiRef("HTML DOM") }}</div>
+
+<h3 id="概述">概述</h3>
+
+<p><strong>onmouseover</strong>属性用来获取或设置当前元素的mouseover事件的事件处理函数.</p>
+
+<h3 id="语法">语法</h3>
+
+<pre class="eval">element.onmouseover = <em>event handling code</em>
+</pre>
+
+<h3 class="editable" id="例子"><span>例子</span></h3>
+
+<pre class="brush: html">&lt;!doctype html&gt;
+&lt;html&gt;
+&lt;head&gt;
+&lt;title&gt;onmouseover/onmouseout event example&lt;/title&gt;
+&lt;script type="text/javascript"&gt;
+    function initElement()
+    {
+        var p = document.getElementById("foo");
+
+        p.onmouseover = showMouseOver;
+        p.onmouseout = showMouseOut;
+    };
+
+    function showMouseOver()
+    {
+        var notice = document.getElementById("notice");
+        notice.innerHTML = '检测到鼠标移进';
+    }
+
+    function showMouseOut()
+    {
+        var notice = document.getElementById("notice");
+        notice.innerHTML = '检测到鼠标移出';
+    }
+
+
+&lt;/script&gt;
+&lt;style type="text/css"&gt;
+    #foo {
+    border: solid blue 2px;
+    }
+&lt;/style&gt;
+&lt;/head&gt;
+&lt;body onload="initElement()";&gt;
+    &lt;span id="foo"&gt;移动鼠标,在该元素上移进移出&lt;/span&gt;
+    &lt;div id="notice"&gt;&lt;/div&gt;
+&lt;/body&gt;
+&lt;/html&gt;  </pre>
+
+<h3 id="备注">备注</h3>
+
+<p>当鼠标移动到一个元素上时,会在这个元素上触发mouseover事件.</p>
+
+<h3 id="规范">规范</h3>
+
+<p>DOM Level 0 不属于任何规范.</p>
+
+<p>{{ languages( { "pl": "pl/DOM/element.onmouseover", "fr": "fr/DOM/element.onmouseover" , "en": "en/DOM/element.onmouseover" } ) }}</p>