1. 程式人生 > >javascript之動態新增和刪除按鈕節點

javascript之動態新增和刪除按鈕節點

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style>
			.file-item{
				width: 300px;
				height: 30px;
				margin:5px 0;
				box-shadow: 0 0 10px rgba(0,0,0,0.3);
			}
		</style>
	</head>
	<body>
		<h1>檔案上傳</h1>
		<input type="file" name="file" /><button id='btn'>add more...</button>
		<div id="file-box">
		</div>
		<script>
			$('btn').addEventListener('click',function(){
				//建立DIV
				var fileItem = document.createElement('div');
				fileItem.className = 'file-item';
				
				//建立input元素,type為file,name為file
				var input = document.createElement('input');
				input.type = input.name = 'file';
				fileItem.appendChild(input);
				
				//建立按鈕
				var btn = document.createElement('button');
				btn.textContent = '刪除';
				fileItem.appendChild(btn);
				
				$('file-box').appendChild(fileItem);
				
				//為按鈕設定點選事件(刪除)
				btn.addEventListener('click',function(){
					//刪除當前按鈕節點所在父節點
//					$('file-box').removeChild(this.parentNode);
					this.parentNode.remove();
				})
				
			});
			
			function $(id){
				return document.getElementById(id);
			}
		</script>
	</body>
</html>