console
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>点击复制</title>
</head>
<body>
<input id="a"/>
<div id="box"></div>
<button onclick="select()">点击复制</button>
<button onclick="paste()">点击粘贴</button>
<script>
function select(){
console.log(a.value)
navigator.clipboard.writeText(a.value).then(r=>{
alert("复制成功")
})
}
function paste() {
navigator.clipboard.readText().then(r => {
console.log('剪切版中的内容', r);
box.innerText=r
}).catch(err => {
console.error('没有剪切板权限！，点击地址栏左边的按钮添加权限！');
})
}
</script>
</body>
</html>