无需安装第三方软件包。我尽量让它简单。这对我来说很有效。

import React, { useState } from "react"    
function MyApp() {
    const [copySuccess, setCopySuccess] = useState(null);
    const copyToClipBoard = async copyMe => {
       try {
           await navigator.clipboard.writeText(copyMe);
           setCopySuccess('Copied!');
       } 
       catch (err) {
           setCopySuccess('Failed to copy!');
       }
    };
     
    return (
        <button onClick={(e) => copyToClipBoard(what you want to copy goes here)} >
           My button
        </button>    
       )
    }

最简单的方法是使用react-copy-to-clipboard npm包。

您可以使用以下命令安装它

npm install --save react react-copy-to-clipboard

请按照以下方式使用它。

const App = React.createClass({
  getInitialState() {
    return {value: '', copied: false};
  },


  onChange({target: {value}}) {
    this.setState({value, copied: false});
  },


  onCopy() {
    this.setState({copied: true});
  },


  render() {
    return (
      <div>

          <input value={this.state.value} size={10} onChange={this.onChange} />

        <CopyToClipboard text={this.state.value} onCopy={this.onCopy}>
          <button>Copy</button>
        </CopyToClipboard>

                <div>
        {this.state.copied ? <span >Copied.</span> : null}
                </div>
        <br />

        <input type="text" />

      </div>
    );
  }
});

ReactDOM.render(<App />, document.getElementById('container'));

以下链接提供了详细的解释

https://www.npmjs.com/package/react-copy-to-clipboard

这是一把移动小提琴。

找到了最好的方法。我是说最快的方法:w3school

https://www.w3schools.com/howto/howto_js_copy_clipboard.asp

在react函数组件中。创建名为handleCopy的函数:

function handleCopy() {
  // get the input Element ID. Save the reference into copyText
  var copyText = document.getElementById("mail")
  // select() will select all data from this input field filled  
  copyText.select()
  copyText.setSelectionRange(0, 99999)
  // execCommand() works just fine except IE 8. as w3schools mention
  document.execCommand("copy")
  // alert the copied value from text input
  alert(`Email copied: ${copyText.value} `)
}

<>
              <input
                readOnly
                type="text"
                value="exemple@email.com"
                id="mail"
              />
              <button onClick={handleCopy}>Copy email</button>

</>

如果不使用React, w3schools也有一个很酷的方法来做到这一点，工具提示包括:https://www.w3schools.com/howto/tryit.asp?filename=tryhow_js_copy_clipboard2

如果使用React，一个很酷的想法是:使用Toastify提醒消息。 https://github.com/fkhadra/react-toastify这是一个很容易使用的库。 安装后，你可以更改这一行:

 alert(`Email copied: ${copyText.value} `)

比如:

toast.success(`Email Copied: ${copyText.value} `)

如果你想使用它，不要忘记安装toastify。导入ToastContainer，同时也导入css:

import { ToastContainer, toast } from "react-toastify"
import "react-toastify/dist/ReactToastify.css"

并将烤面包的容器放入里面返回。

import React from "react"

import { ToastContainer, toast } from "react-toastify"
import "react-toastify/dist/ReactToastify.css"


export default function Exemple() {
  function handleCopy() {
    var copyText = document.getElementById("mail")
    copyText.select()
    copyText.setSelectionRange(0, 99999)
    document.execCommand("copy")
    toast.success(`Hi! Now you can: ctrl+v: ${copyText.value} `)
  }

  return (
    <>
      <ToastContainer />
      <Container>
                <span>E-mail</span>
              <input
                readOnly
                type="text"
                value="myemail@exemple.com"
                id="mail"
              />
              <button onClick={handleCopy}>Copy Email</button>
      </Container>
    </>
  )
}

您可以使用useRef选择元素中的文本，然后将其复制到剪贴板

import React, { useRef } from "react";

const Comp = () => {
   const copyTxt = useRef();

   const handleCopyTxt = () => {
   let txtDiv = copyTxt.current;
      if (document.selection) {
        // IE
        var range = document.body.createTextRange();
        range.moveToElementText(txtDiv);
        range.select();
      } else if (window.getSelection) {
        // other browsers
        var range = document.createRange();
        range.selectNode(txtDiv);
        window.getSelection().removeAllRanges();
        window.getSelection().addRange(range);
      }
      document.execCommand("copy");
    }

    return ( <div ref={copyTxt} > some text to copied </div> )
}

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
                    
                  

 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>