<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<title>拖放操作</title>
<meta name="author" content="汪磊">
<link rel="stylesheet" href="bootstrap.css">
<style>
#target {
padding: 20px;
height: 300px;
border: 5px dashed #c0c0c0;
color: #e0e0e0;
font-size: 40px;
line-height: 260px;
text-align: center;
-webkit-user-select: none;
cursor: pointer;
}
#target.actived {
border-color: #888;
color: #fafafa;
box-shadow: 0 0 80px #e0e0e0 inset;
</style>
</head>
<body>
<div class="container">
<div class="page-header">
<h1>Drag&Drop</h1></div>
<div class="jumbotron">
<p>你好啊，你今年几岁啊，哈哈，我的今天在哪里</p>
<img src="toy.png" alt="">
</div>
<ul id="result" class="list-group"></ul>
<div id="target">
Drag something into here
</div>
<script>
//找到目标位置框框
var target = document.querySelector("#target");
var fileList = document.querySelector("#result");
//注册拖拽进入
target.addEventListener("dragenter",function(){
this.classList.add("actived");
});
//注册拖拽离开
target.addEventListener("dragleave",function(){
this.classList.remove("actived");
//如果想要捕获drop事件，就一定得在该事件中阻止默认事件
target.addEventListener("dragover",function(e){
e.preventDefault();
e.stopPropagation();
//当元素放到该对像上
target.addEventListener("drop",function(e){
if(e.dataTransfer.files.length){
var files = e.dataTransfer.files;
for(var i=0;i<files.length;i++){
var li = document.createElement('li');
li.innerHTML = '<h5 class="list-group-item-heading">'+files[i].name+'</h5>'+
'<p class="list-group-item-text">'+files[i].lastModifiedDate.toLocaleDateString()+' '+
files[i].lastModifiedDate.toLocaleTimeString()+' '+(files[i].size/1024).toFixed(2)+'KB'+
'</p>';
fileList.appendChild(li);
}
}else {
// var data = e.dataTransfer.getData('tex/plain')|| 拖入的是文本
// e.dataTransfer.getData('text/uri-list');拖入的是图片
var data = e.dataTransfer.getData('text/plain');
if(data){
target.innerHTML = data;
var img = document.createElement('img');
img.src = e.dataTransfer.getData('text/uri-list');
target.appendChild(img);
}
this.classList.remove('actived');
</script>
</body>
</html>
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