<html>  
<head>  
<script language="
javascript">  
function addFile() {  
     var fileDiv = document.all['fileDiv'];  
     var strHtml = '<span><input type="file" />  <button onclick="removeFile(parentNode);">删除</button><br></span>';  
     fileDiv.innerHTML += strHtml;  
} www.jb200.com 
  
function removeFile(obj) {  
     obj.removeNode(true);  
}  
</script>  
</head>  
<body>  
<form enctype="multipart/form-data">  
<div id="fileDiv">js实现多附件上传</div>  
<a href="javascript:void(addFile());" class="file">添加附件</a>  
</form>  
</body>  
</html>