h5-20-文件操作-拖放文件

<!DOCTYPE html>

<html>

	<head>

		<meta charset="UTF-8">

		<title></title>

		<style>

			#dropbox {

				width: 300px;

				height: 300px;

				background: #ffffff;

				border:5px dashed #FF0000;

				text-align: center;

				line-height: 300px;

			}

		</style>

	</head>

	<body>

		<div id="dropbox">

			请把文件拖放到此区域

		</div>

		<div id="div1">

			<!--显示文件的信息-->

		</div>

		<script>

			//获得dom对象

			var dropbox = document.getElementById('dropbox');

			var div1 = document.getElementById('div1');

			//拖动进入

			dropbox.ondragenter = function(e) {

				console.log('dropbox dragenter');

				e.preventDefault();

				e.stopPropagation();

				//区域高亮

				this.style.background = 'yellow';

			}

			//拖动离开

			dropbox.ondragleave = function(e) {

				console.log('dropbox dragleave');

				e.preventDefault();

				e.stopPropagation();

				//区域失去高亮

				this.style.background = 'white';

			}

			//拖动悬停

			dropbox.ondragover = function(e) {

				console.log('dropbox dragover');

				e.preventDefault();

				e.stopPropagation();

			}

			//释放元素

			dropbox.ondrop = function(e) {

				console.log('dropbox drop');

				e.preventDefault();

				e.stopPropagation();

				//从e.dataTransfer对象中获得文件列表对象

				var files = e.dataTransfer.files;

				var html = [];

				//遍历文件列表

				for (var i = 0;i < files.length;i ++) {

					//获得当前文件对象

					var f = files[i];

					//读取文件信息拼接字符串放到数组中

					html.push('<p>' + f.name + ',' + (f.type||'未知类型') + ',' + f.size + '字节</p>');

				}

				//在div1中显示文件信息

				div1.innerHTML = html.join('');

			}

		</script>

	</body>

</html>
巴特西

h5-20-文件操作-拖放文件

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