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---
title: Element.insertAdjacentHTML()
slug: Web/API/Element/insertAdjacentHTML
translation_of: Web/API/Element/insertAdjacentHTML
---
<div>{{APIRef("DOM")}}</div>
<p><code>insertAdjacentHTML()</code> 把傳入的字串解析成 HTML 或 XML，並把該節點插入到 DOM 樹指定的位置。它不會重新解析被使用的元素，因此他不會破壞該元素裡面原有的元素。這避免了序列化的複雜步驟，使得它比直接操作 <code>innerHTML</code> 快上許多。</p>
<h2 id="Syntax" name="Syntax">Syntax</h2>
<pre><em>element</em>.insertAdjacentHTML(<em>position</em>, <em>text</em>);</pre>
<h3 id="Parameters">Parameters</h3>
<dl>
<dt>position</dt>
<dd>A {{domxref("DOMString")}} representing the position relative to the <code>element</code>; must be one of the following strings:
<ul>
<li><code style="color: red;">'beforebegin'</code>: 在 <code>element</code> 之前。</li>
<li><code style="color: green;">'afterbegin'</code>: 在 <code>element</code> 裡面，第一個子元素之前。</li>
<li><code style="color: blue;">'beforeend'</code>: 在 <code>element</code> 裡面，最後一個子元素之後。</li>
<li><code style="color: magenta;">'afterend'</code>: 在 <code>element</code> 之後。</li>
</ul>
</dd>
<dt>text</dt>
<dd><code>text</code> 是即將被解析並插入到 DOM 樹裡的字串。</dd>
</dl>
<h3 id="Visualization_of_position_names">Visualization of position names</h3>
<pre><!-- beforebegin -->
<p>
<!-- afterbegin -->
foo
<!-- beforeend -->
</p>
<!-- afterend --></pre>
<div class="note"><strong>Note: </strong> <code>beforebegin</code> 和 <code>afterend</code> 只在該節點位於 DOM 樹內、並且有母元素時有效。</div>
<h2 id="Example" name="Example">Example</h2>
<pre class="brush: js">// <div id="one">one</div>
var d1 = document.getElementById('one');
d1.insertAdjacentHTML('afterend', '<div id="two">two</div>');
// At this point, the new structure is:
// <div id="one">one</div><div id="two">two</div></pre>
<h2 id="Specification" name="Specification">Notes</h2>
<h3 id="Security_Considerations">Security Considerations</h3>
<p>When inserting HTML into a page by using <code>insertAdjacentHTML</code> be careful not to use user input that hasn't been escaped.</p>
<p>It is not recommended you use <code>insertAdjacentHTML</code> when inserting plain text; instead, use the <a href="https://developer.mozilla.org/en-US/docs/Web/API/Node/textContent" title="The Node.textContent property represents the text content of a node and its descendants."><code>Node.textContent</code></a> property or <a href="https://developer.mozilla.org/en-US/docs/Web/API/Element/insertAdjacentText" title="The insertAdjacentText() method inserts a given text node at a given position relative to the element it is invoked upon."><code>Element.insertAdjacentText()</code></a> method. This doesn't interpret the passed content as HTML, but instead inserts it as raw text.</p>
<h2 id="Specification" name="Specification">Specification</h2>
<table class="standard-table">
<thead>
<tr>
<th scope="col">Specification</th>
<th scope="col">Status</th>
<th scope="col">Comment</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName('DOM Parsing', '#widl-Element-insertAdjacentHTML-void-DOMString-position-DOMString-text', 'Element.insertAdjacentHTML()')}}</td>
<td>{{ Spec2('DOM Parsing') }}</td>
<td> </td>
</tr>
</tbody>
</table>
<h2 id="Browser_Compatibility" name="Browser_Compatibility">Browser compatibility</h2>
{{Compat("api.Element.insertAdjacentHTML")}}
<h2 id="See_also">See also</h2>
<ul>
<li>{{domxref("Element.insertAdjacentElement()")}}</li>
<li>{{domxref("Element.insertAdjacentText()")}}</li>
<li>{{domxref("XMLSerializer")}}: Construct a DOM representation of XML text</li>
<li><a class="external" href="https://hacks.mozilla.org/2011/11/insertadjacenthtml-enables-faster-html-snippet-injection/">hacks.mozilla.org guest post</a><span class="external"> by Henri Sivonen including benchmark showing that insertAdjacentHTML can be way faster in some cases.</span></li>
</ul>
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