使用此命令将值传递给函数

var promise = navigator.clipboard.writeText(newClipText)

使用此命令将值传递给函数

var promise = navigator.clipboard.writeText(newClipText)

我个人认为没有必要为此建立一个图书馆。看看http://caniuse.com/#feat=clipboard，它现在得到了相当广泛的支持，但是你仍然可以做一些事情，比如检查当前客户端是否存在该功能，如果它不存在，就隐藏复制按钮。

import React from 'react';

class CopyExample extends React.Component {

  constructor(props) {
    super(props);

    this.state = { copySuccess: '' }
  }

  copyToClipboard = (e) => {
    this.textArea.select();
    document.execCommand('copy');
    // This is just personal preference.
    // I prefer to not show the whole text area selected.
    e.target.focus();
    this.setState({ copySuccess: 'Copied!' });
  };

  render() {
    return (
      <div>
        {
         /* Logical shortcut for only displaying the 
            button if the copy command exists */
         document.queryCommandSupported('copy') &&
          <div>
            <button onClick={this.copyToClipboard}>Copy</button> 
            {this.state.copySuccess}
          </div>
        }
        <form>
          <textarea
            ref={(textarea) => this.textArea = textarea}
            value='Some text to copy'
          />
        </form>
      </div>
    );
  }

}
    
export default CopyExample;

更新:在React 16.7.0-alpha.0中使用React hook重写

import React, { useRef, useState } from 'react';

export default function CopyExample() {

  const [copySuccess, setCopySuccess] = useState('');
  const textAreaRef = useRef(null);

  function copyToClipboard(e) {
    textAreaRef.current.select();
    document.execCommand('copy');
    // This is just personal preference.
    // I prefer to not show the whole text area selected.
    e.target.focus();
    setCopySuccess('Copied!');
  };

  return (
    <div>
      {
       /* Logical shortcut for only displaying the 
          button if the copy command exists */
       document.queryCommandSupported('copy') &&
        <div>
          <button onClick={copyToClipboard}>Copy</button> 
          {copySuccess}
        </div>
      }
      <form>
        <textarea
          ref={textAreaRef}
          value='Some text to copy'
        />
      </form>
    </div>
  );
}

导航器。剪贴板不工作在HTTP连接根据他们的文档。所以你可以检查它是否未定义，并使用document.execCommand('copy')来代替，这个解决方案应该涵盖几乎所有的浏览器

const defaultCopySuccessMessage = 'ID copied!'

const CopyItem = (props) => {
  const { copySuccessMessage = defaultCopySuccessMessage, value } = props

  const [showCopySuccess, setCopySuccess] = useState(false)


  function fallbackToCopy(text) {
    if (window.clipboardData && window.clipboardData.setData) {
      // IE specific code path to prevent textarea being shown while dialog is visible.
      return window.clipboardData.setData('Text', text)
    } else if (document.queryCommandSupported && document.queryCommandSupported('copy')) {
      const textarea = document.createElement('textarea')
      textarea.innerText = text
      // const parentElement=document.querySelector(".up-CopyItem-copy-button")
      const parentElement = document.getElementById('copy')
      if (!parentElement) {
        return
      }
      parentElement.appendChild(textarea)
      textarea.style.position = 'fixed' // Prevent scrolling to bottom of page in MS Edge.
      textarea.select()
      try {
        setCopySuccess(true)
        document.execCommand('copy') // Security exception may be thrown by some browsers.
      } catch (ex) {
        console.log('Copy to clipboard failed.', ex)
        return false
      } finally {
        parentElement.removeChild(textarea)
      }
    }
  }

  const copyID = () => {
    if (!navigator.clipboard) {
      fallbackToCopy(value)
      return
    }
    navigator.clipboard.writeText(value)
    setCopySuccess(true)
  }

  return showCopySuccess ? (
    <p>{copySuccessMessage}</p>
  ) : (
    <span id="copy">
      <button onClick={copyID}>Copy Item </button>
    </span>
  )
}

您可以在任何地方调用和重用该组件

const Sample=()=>(
   <CopyItem value="item-to-copy"/>
)

您可以使用事件clipboardData收集方法e.clipboardData。setData(类型、内容)。

在我看来，这是实现在剪贴板内推送一些东西的最直接的方法，看看这个(我用它来修改数据，而本地复制动作):

...

handleCopy = (e) => {
    e.preventDefault();
    e.clipboardData.setData('text/plain', 'Hello, world!');
}

render = () =>
    <Component
        onCopy={this.handleCopy}
    />

我选择了这个路径:https://developer.mozilla.org/en-US/docs/Web/Events/copy

干杯!

编辑:出于测试目的，我添加了代码依赖:https://codepen.io/dprzygodzki/pen/ZaJMKb

const handleCopy = async () => {
    let copyText = document.getElementById('input') as HTMLInputElement;
    copyText.select();
    document.execCommand('copy');
  };

return (
  <TextField
     variant="outlined"
     value={copyText}
     id="input" 
  />
);

这是我的工作。