<!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>Title</title>
<script src="https://code.jquery.com/jquery-3.7.0.min.js"></script>
<style>
table{
border-collapse : collapse;
}
table,td,th{
border: 1px solid black;
}
</style>
</head>
<body>
<table id = "tb1">
<thead>
<tr>
<th>번호</th>
<th>제목</th>
<th>작성자</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>게시글</td>
<td>히히히</td>
</tr>
</tbody>
</table>
<table id = "tb2">
<thead>
<tr>
<th>번호</th>
<th>제목</th>
<th>작성자</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>게시글</td>
<td>히히히</td>
</tr>
</tbody>
</table>
</body>
<script>
//1.empty() 하위 태그를 모두 삭제
$("#tb1").empty();
//2. remove() : 해당 태그 삭제
const timeout = setTimeout(()=>{
$("#tb2").remove();
},2000)
</script>
</html>
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