files/zh-cn/web/api/element/insertadjacenttext/index.html


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---
title: Element.insertAdjacentText()
slug: Web/API/Element/insertAdjacentText
tags:
  - Element.insertAdjacentText()
translation_of: Web/API/Element/insertAdjacentText
---
<p>{{APIRef("DOM")}}</p>

<p><strong><code>insertAdjacentText()</code></strong> 方法将一个给定的文本节点插入在相对于被调用的元素给定的位置。</p>

<h2 id="Syntax" name="Syntax">句法</h2>

<pre><em>element</em>.insertAdjacentText(<em>position</em>, <em>element</em>);</pre>

<h3 id="参数">参数</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>: Before the <code>element</code> itself.</li>
  <li><code style="color: green;">'afterbegin'</code>: Just inside the <code>element</code>, before its first child.</li>
  <li><code style="color: blue;">'beforeend'</code>: Just inside the <code>element</code>, after its last child.</li>
  <li><code style="color: magenta;">'afterend'</code>: After the <code>element</code> itself.</li>
 </ul>
 </dd>
 <dt>element</dt>
 <dd>A {{domxref("DOMString")}} representing the text to be inserted into the tree.</dd>
</dl>

<h3 id="返回值">返回值</h3>

<p>Void.</p>

<h3 id="例外">例外</h3>

<table class="standard-table">
 <thead>
  <tr>
   <th scope="col">Exception</th>
   <th scope="col">Explanation</th>
  </tr>
 </thead>
 <tbody>
  <tr>
   <td><code>SyntaxError</code></td>
   <td>The <code>position</code> specified is not a recognised value.</td>
  </tr>
 </tbody>
</table>

<h3 id="Visualization_of_position_names">Visualization of position names</h3>

<pre>&lt;!-- <strong><code style="color: red;">beforebegin</code></strong> --&gt;
<code style="font-weight: bold;">&lt;p&gt;</code>
&lt;!-- <strong><code style="color: green;">afterbegin</code></strong> --&gt;
foo
&lt;!-- <strong><code style="color: blue;">beforeend</code></strong> --&gt;
<code style="font-weight: bold;">&lt;/p&gt;</code>
&lt;!-- <strong><code style="color: magenta;">afterend</code></strong> --&gt;</pre>

<div class="note">注意：只有当节点位于树中并具有元素父元素时，beforebegin和afterend位置才能工作。</div>

<h2 id="Example" name="Example">范例</h2>

<pre class="brush: js">beforeBtn.addEventListener('click', function() {
  para.insertAdjacentText('afterbegin',textInput.value);
});

afterBtn.addEventListener('click', function() {
  para.insertAdjacentText('beforeend',textInput.value);
});</pre>

<p>Have a look at our <a href="https://mdn.github.io/dom-examples/insert-adjacent/insertAdjacentText.html">insertAdjacentText.html</a> demo on GitHub (see the <a href="https://github.com/mdn/dom-examples/blob/master/insert-adjacent/insertAdjacentText.html">source code</a> too.) Here we have a simple paragraph. You can enter some text into the form element, then press the <em>Insert before</em> and <em>Insert after</em> buttons to insert it before or after the existing paragraph text using <code>insertAdjacentText()</code>. Note that the existing text node is not added to — further text nodes are created containing the new additions.</p>

<h2 id="Specification" name="Specification">规范</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 WHATWG', '#dom-element-insertadjacenttext', 'insertAdjacentText()')}}</td>
   <td>{{ Spec2('DOM WHATWG') }}</td>
   <td> </td>
  </tr>
 </tbody>
</table>

<h2 id="Browser_Compatibility" name="Browser_Compatibility">浏览器兼容性</h2>

{{Compat("api.Element.insertAdjacentText")}}

<h2 id="也可以看看">也可以看看</h2>

<ul>
 <li>{{domxref("Element.insertAdjacentElement()")}}</li>
 <li>{{domxref("Element.insertAdjacentHTML()")}}</li>
</ul>