我使用的是ReactJS，当用户点击一个链接时，我想复制一些文本到剪贴板。
我使用Chrome 52，我不需要支持任何其他浏览器。
我不明白为什么这段代码没有导致数据被复制到剪贴板。(代码片段的来源是Reddit的一篇帖子)。
我做错了吗?谁能建议有一个“正确”的方法来实现复制到剪贴板使用reactjs?
copyToClipboard = (text) => {
console.log('text', text)
var textField = document.createElement('textarea')
textField.innerText = text
document.body.appendChild(textField)
textField.select()
document.execCommand('copy')
textField.remove()
}
当前回答
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
其他回答
import React, { Component } from 'react';
export default class CopyTextOnClick extends Component {
copyText = () => {
this.refs.input.select();
document.execCommand('copy');
return false;
}
render () {
const { text } = this.state;
return (
<button onClick={ this.copyText }>
{ text }
<input
ref="input"
type="text"
defaultValue={ text }
style={{ position: 'fixed', top: '-1000px' }} />
</button>
)
}
}
如果您希望以编程方式将数据写入剪贴板，可以在按钮上使用这个简单的内联onClick函数。
onClick={() => {navigator.clipboard.writeText(this.state.textToCopy)}}
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>
);
}
react钩子的最佳解决方案，不需要外部库
import React, { useState } from 'react'; const MyComponent = () => { const [copySuccess, setCopySuccess] = useState(''); // your function to copy here const copyToClipBoard = async copyMe => { try { await navigator.clipboard.writeText(copyMe); setCopySuccess('Copied!'); } catch (err) { setCopySuccess('Failed to copy!'); } }; return ( <div> <Button onClick={() => copyToClipBoard('some text to copy')}> Click here to copy </Button> // after copying see the message here {copySuccess} </div> ) }
查看关于导航器的进一步文档。弹夹板，导航器。剪贴板文件 navigotor。剪贴板是由大量浏览器支持的，看这里支持的浏览器
<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>
