

노드 생성
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<!DOCTYPE html>
<head>
<style>
table {border-spacing: 0; border-collapse: collapse;}
thread th, tbody td {
border: 1px solid black;
}
</style>
</head>
<body>
<table>
<thead>
<tr>
<th>교사</th>
<th>훈련과목</th>
<th>훈련내용</th>
</tr>
</thead>
<tbody class="todoList">
<tr>
<td><input type="text" size="3"></td>
<td><input type="text"></td>
<td><input type="text"></td>
</tr>
</tbody>
</table>
<button type="button" id="addList">1개씩 추가하기</button>
<button type="button" id="addLists">5개씩 추가하기</button>
<button type="button" id="remove">1개 삭제하기</button>
<script>
var todoList = document.querySelector(".todoList");
var addList = document.getElementById("addList");
var addLists = document.getElementById("addLists");
addList.addEventListener("click", function createList(){
var tr = document.createElement("tr");
var td = document.createElement("td");
td.innerHTML = "<input type='text' size='3'>";
tr.appendChild(td);
var td = document.createElement("td");
td.innerHTML = "<input type='text'>";
tr.appendChild(td);
var td = document.createElement("td");
td.innerHTML = "<input type='text'>";
tr.appendChild(td);
//todoList 아래에 행을 통째로 추가
todoList.appendChild(tr);
});
//addLists.addEventListener("click", createLists)
addLists.onclick = function(){
for(var i=0; i<5; i++){
createLists();}
}
function createLists(){
var tr = document.createElement("tr");
var td = document.createElement("td");
td.innerHTML = "<input type='text' size='3'>";
tr.appendChild(td);
var td = document.createElement("td");
td.innerHTML = "<input type='text'>";
tr.appendChild(td);
var td = document.createElement("td");
td.innerHTML = "<input type='text'>";
tr.appendChild(td);
todoList.appendChild(tr);
}
function removeList(){
//todoList.remove(); 테이블을 지워버림
if(todoList.children.length ===0) return;
console.dir( todoList )//todoList에서 사용할 수 있는 기능 확인
todoList.removeChild( todoList.children[0] )
/*
console.log(todoList.childNodes)
console.log(todoList.children)
console.log(todoList.children[0])
*/
}
</script>
</body>
</html>