mdn Node.cloneNode() 复制节点的时候 不会复制 addEventListener和dom.onclick 绑定的事件。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div class="wrap">
wrap
<input type="text" value="123">
<div class="content">
content
</div>
</div>
<script>
const wrap = document.querySelector('.wrap')
wrap.addEventListener('click',function(){
console.log('wrap click from add')
})
wrap.onclick = function(){
console.log('wrap click from on')
}
const content = document.querySelector('.content')
const wrap_clone = wrap.cloneNode(true)
document.body.appendChild(wrap_clone)
</script>
</body>
</html>