copyclip = (item) => {
    var textField = document.createElement('textarea')
    textField.innerText = item
    document.body.appendChild(textField)
    textField.select()
    document.execCommand('copy')
    this.setState({'copy':"Copied"});
    textField.remove()
    setTimeout(() => {
      this.setState({'copy':""});
    }, 1000);
 }

 <span   className="cursor-pointer ml-1" onClick={()=> this.copyclip(passTextFromHere)} >Copy</span> <small>{this.state.copy}</small>

你也可以在函数组件或无状态组件中使用react钩子: PS:确保你通过npm/yarn使用这个命令安装useClippy: NPM安装使用clippy或 纱线添加使用夹头

import React from 'react';
import useClippy from 'use-clippy';

export default function YourComponent() {

// clipboard is the contents of the user's clipboard.
  // setClipboard('new value') wil set the contents of the user's clipboard.

  const [clipboard, setClipboard] = useClippy();

  return (
    <div>

      {/* Button that demonstrates reading the clipboard. */}
      <button
        onClick={() => {
          alert(`Your clipboard contains: ${clipboard}`);
        }}
      >
        Read my clipboard
      </button>

      {/* Button that demonstrates writing to the clipboard. */}
      <button
        onClick={() => {
          setClipboard(`Random number: ${Math.random()}`);
        }}
      >
        Copy something
      </button>
    </div>
  );
}

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>
  );
}

<input
value={get(data, "api_key")}
styleName="input-wrap"
title={get(data, "api_key")}
ref={apikeyObjRef}
/>
  <div
onClick={() => {
  apikeyObjRef.current.select();
  if (document.execCommand("copy")) {
    document.execCommand("copy");
  }
}}
styleName="copy"
>
  复制
</div>

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

make a componant as follows :- 

//react functional componant 

import React, { useState } from "react";

function CopyToClipboard(props) {
  const [copied, setCopied] = useState("copy");
  return (
    <div
      className="font-medium mr-4 text-green-700 cursor-pointer"
      onClick={() => {
        navigator.clipboard.writeText(props.text);
        setCopied("copied");
      }}>
      {copied}
    </div>
  );
}

export default CopyToClipboard;

//then use this componant anywhere

<CopyToClipboard text={"text you want to copy"}></CopyToClipboard>

//it will give a text saying "copy"`enter code here` and after clicking on that text, text provided with props will get copied