js picture drag and drop series 1-drag and drop pictures back and forth
js picture drag and drop series 2-drag and drop local pictures and display
js pictures drag and drop series 3-drag and drop local pictures and upload
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style type="text/css">
.container {
display: flex;
border: 1px solid #aaaaaa;
padding: 20px;
width: 250px;
justify-content: space-around;
border-radius: 1rem;
}
.item {
width: 100px;
height: 100px;
border: 1px solid #aaaaaa;
border-radius: 0.5rem;
}
</style>
</head>
<body>
<div class="container">
<div class="item" ondrop="drop(event)" ondragover="allowDrop(event)">
<img src="images/123.png" draggable="true" ondragstart="drag(event)" id="drag1" width="100" height="100">
</div>
<div class="item" ondrop="drop(event)" ondragover="allowDrop(event)"></div>
</div>
<script>
function allowDrop(ev) {
ev.preventDefault();
}
function drag(ev) {
// console.log('源对象开始被拖动,DragStart...');
ev.dataTransfer.setData("Text", ev.target.id);
}
// 源对象在目标对象范围内释放
function drop(ev) {
// console.log('源对象在目标对象范围内释放,Drop...');
ev.preventDefault();
var data = ev.dataTransfer.getData("Text");
ev.target.appendChild(document.getElementById(data));
}
</script>
</body>
</html>