<form id="fileForm" action="" method="post" enctype="multipart/form-data">
<tr>
<td>
<input type="file" name="file"><input type="button" id="addButon" value="Add" onclick="add()">
</td>
</tr>
</form>
核心jquery代码
//添加一行<tr>
function add() {
var content = "<tr><td>";
content += "<input type='file' name='file'><input type='button' value='Remove' onclick='remove(this)'>";
content += "</td></tr>"
$("#fileForm").append(content);
}
//删除当前行<tr>
function remove(obj) {
$(obj).parent().parent().remove();
}
脚本之家整理的在线演示：
http://demo.jb51.net/jquery/juqery_input/