바닐라 자바스크립트를 사용해서 드래그 앤 드롭을 구현해보자.
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<section>
<div class="droppable">
<p draggable="true">바나나</p>
<p draggable="true">포도</p>
<p draggable="true">딸기</p>
<p draggable="true">수박</p>
<p draggable="true">사과</p>
<p draggable="true">배</p>
</div>
<div class="droppable"></div>
<div class="droppable"></div>
<div class="droppable"></div>
</section>
<script src="script.js"></script>
</body>
</html>
css
* {
padding: 0;
margin: 0;
box-sizing: border-box;
}
section {
width: 100%;
height: 100vh;
background: #302c2c;
display: flex;
gap: 20px;
justify-content: center;
align-items: center;
}
.droppable {
width: 200px;
height: 600px;
background-color: white;
border-radius: 10px;
padding: 20px;
display: flex;
flex-direction: column;
gap: 10px;
}
p {
width: 100%;
background-color: blueviolet;
padding: 10px;
border-radius: 5px;
color:white;
cursor: pointer;
}
JS
const dragItem = document.querySelectorAll('.droppable p');
const droppables = document.querySelectorAll('.droppable');
let dragged = null;
dragItem.forEach(item => {
// 드래그 시작시 이벤트
item.addEventListener('dragstart', () => {
dragged = item;
item.style.opacity = '0.3';
});
// 드래그 끝났을때 이벤트
item.addEventListener('dragend', () => {
dragged = null;
if (item) item.style.opacity = '1';
});
});
droppables.forEach(droppable => {
// 기본 동작 방지
droppable.addEventListener('dragover', (e) => {
e.preventDefault();
});
// 드래그된 아이템이 들어왔을 때
droppable.addEventListener('dragenter', function(e) {
e.preventDefault();
this.style.backgroundColor = 'white';
this.style.opacity = '0.5';
});
// 드래그된 아이템이 나갔을 때
droppable.addEventListener('dragleave', function() {
this.style.backgroundColor = 'white';
this.style.opacity = '1';
});
// 드래그된 아템을 drop했을 때
droppable.addEventListener('drop', function() {
this.appendChild(dragged);
this.style.backgroundColor = 'white';
this.style.opacity = '1';
});
});