HTMLElement.oncopy

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句法
范例
规范
浏览器兼容性
另请参阅
相关话题

这是实验性技术
检查浏览器兼容性表格要小心谨慎在生产中使用这之前。

oncopy 特性为 HTMLElement interface is an EventHandler 处理 copy 事件。

copy event fires when the user attempts to copy text.

句法

target.oncopy = functionRef;

值

functionRef is a function name or a 函数表达式 . The function receives a ClipboardEvent object as its sole argument.

范例

This example blocks every copy and paste attempt from the <textarea> .

HTML

<h3>Play with this text area:</h3>
<textarea id="editor" rows="3">Try copying and pasting text into this field!</textarea>
<h3>Log:</h3>
<p id="log"></p>

JavaScript

const log = document.getElementById('log');
function logCopy(event) {
  log.innerText = 'Copy blocked!\n' + log.innerText;
  event.preventDefault();
}
function logPaste(event) {
  log.innerText = 'Paste blocked!\n' + log.innerText;
  event.preventDefault();
}
const editor = document.getElementById('editor');
editor.oncopy = logCopy;
editor.onpaste = logPaste;

结果

规范

WHATWG Standard

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`oncopy` 非标	Chrome 71	Edge 12	Firefox 3	IE ?	Opera Yes	Safari Yes	WebView Android 71	Chrome Android 71	Firefox Android 4	Opera Android Yes	Safari iOS Yes	Samsung Internet Android 10.0

图例

完整支持
兼容性未知 ?
非标。预期跨浏览器支持较差。

Since Firefox 13, the preference dom.event.clipboardevents.enabled controls this feature. It defaults to true but can be disabled.

另请参阅

Clipboard API event copy
相关事件处理程序
- HTMLElement.oncut
- HTMLElement.onpaste

元数据

最后修改： Nov 17, 2019

在此页

句法

值

范例

HTML

JavaScript

结果

规范

浏览器兼容性

图例

另请参阅

相关话题