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
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>
其他回答
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>
如果希望从DIV而不是文本字段中进行选择，下面是代码。“代码”是需要复制的值
import React from 'react'
class CopyToClipboard extends React.Component {
copyToClipboard(code) {
var textField = document.createElement('textarea')
textField.innerText = code
document.body.appendChild(textField)
textField.select()
document.execCommand('copy')
textField.remove()
}
render() {
return (
<div onClick={this.copyToClipboard.bind(this, code)}>
{code}
</div>
)
}
}
export default CopyToClipboard
使用材质UI完全工作的React组件
为了更好地理解，我还准备了一个CodeSandbox。希望这能有所帮助。
import { useState } from "react";
import { IconButton, Snackbar } from "@mui/material";
import ShareIcon from "@mui/icons-material/Share";
const CopyToClipboardButton = () => {
const [open, setOpen] = useState(false);
const handleClick = () => {
setOpen(true);
navigator.clipboard.writeText(window.location.toString());
};
return (
<>
<IconButton onClick={handleClick} color="primary">
<ShareIcon />
</IconButton>
<Snackbar
message="Copied to clibboard"
anchorOrigin={{ vertical: "top", horizontal: "center" }}
autoHideDuration={20000}
onClose={() => setOpen(false)}
open={open}
/>
</>
);
};
export default CopyToClipboardButton;
下面是按钮的样子:
当你点击它时:
来源:https://fwuensche.medium.com/react——按钮——复制到剪贴板- 75 ef5ecdc708
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"/>
)
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。
