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+---
+title: Element.lastElementChild
+slug: Web/API/Element/lastElementChild
+translation_of: Web/API/Element/lastElementChild
+tags:
+  - API
+  - DOM
+  - Element
+  - Property
+browser-compat: api.Element.lastElementChild
+---
+<p>{{ APIRef("DOM") }}</p>
+
+<p>只读属性 <code><strong>Element.lastElementChild</strong></code> 返回对象的最后一个子{{domxref("Element", "元素")}}，如果没有子元素，则返回 <code>null</code>。</p>
+
+<div class="note">
+<p>This property was initially defined in the {{domxref("ElementTraversal")}} pure interface. As this interface contained two distinct set of properties, one aimed at {{domxref("Node")}} that have children, one at those that are children, they have been moved into two separate pure interfaces, {{domxref("Element")}} and {{domxref("ChildNode")}}. In this case, <code>lastElementChild</code> moved to {{domxref("Element")}}. This is a fairly technical change that shouldn't affect compatibility.</p>
+</div>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox">var <em>element</em> = node.lastElementChild; </pre>
+
+<h2 id="例子">例子</h2>
+
+<pre class="brush: html">&lt;ul id="foo"&gt;
+  &lt;li&gt;First  (1)&lt;/li&gt;
+  &lt;li&gt;Second (2)&lt;/li&gt;
+  &lt;li&gt;Third  (3)&lt;/li&gt;
+&lt;/ul&gt;
+
+&lt;script&gt;
+var foo = document.getElementById('foo');
+// yields: Third  (3)
+console.log(foo.lastElementChild.textContent);
+&lt;/script&gt;
+</pre>
+
+<h2 id="适用于_IE8、IE9_和_Safari_的_Polyfill">适用于 IE8、IE9 和 Safari 的 Polyfill</h2>
+
+<pre class="brush: js">// Overwrites native 'lastElementChild' prototype.
+// Adds Document &amp; DocumentFragment support for IE9 &amp; Safari.
+// Returns array instead of HTMLCollection.
+;(function(constructor) {
+    if (constructor &amp;&amp;
+        constructor.prototype &amp;&amp;
+        constructor.prototype.lastElementChild == null) {
+        Object.defineProperty(constructor.prototype, 'lastElementChild', {
+            get: function() {
+                var node, nodes = this.childNodes, i = nodes.length - 1;
+                while (node = nodes[i--]) {
+                    if (node.nodeType === 1) {
+                        return node;
+                    }
+                }
+                return null;
+            }
+        });
+    }
+})(window.Node || window.Element);
+</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">备注</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('DOM WHATWG', '#dom-Element-lastelementchild', 'Element.lastElementChild')}}</td>
+   <td>{{Spec2('DOM WHATWG')}}</td>
+   <td>Splitted the <code>ElementTraversal</code> interface in {{domxref("ChildNode")}} and <code>Element</code>. This method is now defined on the latter.<br>
+    The {{domxref("Document")}} and {{domxref("DocumentFragment")}} implemented the new interfaces.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('Element Traversal', '#attribute-lastElementChild', 'ElementTraversal.lastElementChild')}}</td>
+   <td>{{Spec2('Element Traversal')}}</td>
+   <td>Added its initial definition to the <code>ElementTraversal</code> pure interface and use it on {{domxref("Element")}}.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+
+
+<p>{{Compat("api.Element.lastElementChild")}}</p>
+
+<h2 id="参见">参见</h2>
+
+<ul>
+ <li>纯接口 {{domxref("Element")}} 和 {{domxref("ChildNode")}}。</li>
+ <li>
+  <div class="syntaxbox">实现了此纯接口的对象类型：{{domxref("Document")}}、{{domxref("Element")}}，和 {{domxref("DocumentFragment")}}。</div>
+ </li>
+</ul>