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+---
+title: 'Element: paste事件'
+slug: Web/Events/paste
+tags:
+ - Clipboard API
+ - Event
+ - Reference
+translation_of: Web/API/Element/paste_event
+---
+<p> {{APIRef}}</p>
+
+<p>当用户在浏览器用户界面发起“粘贴”操作时,会触发<strong><code>paste</code></strong>事件。</p>
+
+<pre class="syntaxbox"><strong>冒泡</strong> 是
+
+<strong>可取消</strong> 是
+
+<strong>接口</strong> {{domxref("ClipboardEvent")}}
+
+<strong>事件处理属性</strong> {{domxref("HTMLElement/onpaste", "onpaste")}}
+</pre>
+
+<p><span style="font-size: 1rem; letter-spacing: -0.00278rem;">如果光标位于可编辑的上下文中(例如,在 {{HTMLElement("textarea")}} 或者 </span><code style="font-style: normal; font-size: 1rem; letter-spacing: -0.00278rem;"><a href="https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/contenteditable">contenteditable</a></code><span style="font-size: 1rem; letter-spacing: -0.00278rem;"> 属性设置为 </span><code style="font-style: normal; font-size: 1rem; letter-spacing: -0.00278rem;">true的元素</code><span style="font-size: 1rem; letter-spacing: -0.00278rem;">),则默认操作是将剪贴板的内容插入光标所在位置的文档中。</span></p>
+
+<p>事件处理程序可以通过调用事件的 <code>clipboardData</code> 属性上的 {{domxref("DataTransfer/getData", "getData()")}}访问剪贴板内容。</p>
+
+<p>要覆盖默认行为(例如,插入一些不同的数据或转换剪贴板的内容),事件处理程序必须使用 {{domxref("Event/preventDefault", "event.preventDefault()")}},取消默认操作,然后手动插入想要的数据。</p>
+
+<p>可以构造和分派<a href="https://developer.mozilla.org/zh-CN/docs/Web/Guide/Events/Creating_and_triggering_events">合成的</a><code>paste</code>事件,但这不会影响文档内容。</p>
+
+<h2 id="举例">举例</h2>
+
+<h3 id="Live_example">Live example</h3>
+
+<h4 id="HTML">HTML</h4>
+
+<pre class="brush: html">&lt;div class="source" contenteditable="true"&gt;Try copying text from this box...&lt;/div&gt;
+&lt;div class="target" contenteditable="true"&gt;...and pasting it into this one&lt;/div&gt;</pre>
+
+<h4 id="CSS">CSS</h4>
+
+<pre class="brush: css">div.source, div.target {
+ border: 1px solid gray;
+ margin: .5rem;
+ padding: .5rem;
+ height: 1rem;
+ background-color: #e9eef1;
+}
+</pre>
+
+<h4 id="JS">JS</h4>
+
+<pre class="brush: js">const target = document.querySelector('div.target');
+
+target.addEventListener('paste', (event) =&gt; {
+ let paste = (event.clipboardData || window.clipboardData).getData('text');
+ paste = paste.toUpperCase();
+
+ const selection = window.getSelection();
+ if (!selection.rangeCount) return false;
+ selection.deleteFromDocument();
+ selection.getRangeAt(0).insertNode(document.createTextNode(paste));
+
+ event.preventDefault();
+});
+</pre>
+
+<h4 id="Result">Result</h4>
+
+<p> {{EmbedLiveSample('Live_example', '100%', '100px')}}</p>
+
+<h2 id="规范">规范</h2>
+
+<table>
+ <thead>
+ <tr>
+ <th scope="col">规范</th>
+ <th scope="col">状态</th>
+ </tr>
+ </thead>
+ <tbody>
+ <tr>
+ <td>{{SpecName('Clipboard API', '#clipboard-event-paste')}}</td>
+ <td>{{Spec2('Clipboard API')}}</td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+<div class="hidden">
+<p>The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>
+</div>
+
+<p>{{Compat("api.Element.paste_event")}}</p>
+
+<h2 id="另见">另见</h2>
+
+<ul>
+ <li>Related events: {{domxref("Element/cut_event", "cut")}}, {{domxref("Element/copy_event", "copy")}}</li>
+ <li>This event on {{domxref("Document")}} targets: {{domxref("Document/paste_event", "paste")}}</li>
+ <li>This event on {{domxref("Window")}} targets: {{domxref("Window/paste_event", "paste")}}</li>
+</ul>