노드 순서 변경
특정 위치에 노드를 삽입하는 기능
insertBefore(삽입하려는노드, 기준노드) - 기준노드 앞에 삽입노드를 추가
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<!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>Document</title>
<style>
table {border-spacing: 0 ; border-collapse: collapse;}
thead th, tbody td{
border: 1px solid black;
}
</style>
</head>
<body>
<table>
<thead>
<th>이동</th>
<th>번호</th>
<th>이름</th>
<th>내용</th>
<th>날짜</th>
</thead>
<tbody class="table">
<tr style="background-color: skyblue;">
<td><button onclick="down(this)">down</button><button onclick="up(this)">up</button></td>
<td>1</td>
<td>츄</td>
<td>하이</td>
<td>2023-04-06</td>
</tr>
<tr>
<td><button onclick="down(this)">down</button><button onclick="up(this)">up</button></td>
<td>2</td>
<td>chew</td>
<td>하이</td>
<td>2023-04-06</td>
</tr>
<tr>
<td><button onclick="down(this)">down</button><button onclick="up(this)">up</button></td>
<td>3</td>
<td>brew</td>
<td>하이</td>
<td>2023-04-06</td>
</tr>
<tr>
<td><button onclick="down(this)">down</button><button onclick="up(this)">up</button></td>
<td>4</td>
<td>java</td>
<td>하이</td>
<td>2023-04-06</td>
</tr>
<tr>
<td><button onclick="down(this)">down</button><button onclick="up(this)">up</button></td>
<td>5</td>
<td>치치</td>
<td>하이</td>
<td>2023-04-06</td>
</tr>
</tbody>
</table>
<script>
function down(node){
var table = document.querySelector(".table"); //table을 선택
var current = node.parentElement.parentElement; //button 노드 부모의 부모노드 선택 -> tr
var next = current.nextElementSibling; //tr의 다음 tr 노드 선택
if(next === null){
alert("마지막 행입니다.");
return;
}
table.insertBefore(next, current); //insertBefore(삽입할 노드,기준이되는 노드)
}
function up(node){
var table = document.querySelector(".table");
var current = node.parentElement.parentElement;
var next = current.previousElementSibling;
if(next === null){
alert("마지막 행입니다.");
return;
}
table.insertBefore(current, next);
}
</script>
</body>
</html>