table动态添加删除一行

function del(obj) {
		$(obj).remove();
}
function add(id,obj,listname) {
	var nameVal = obj.innerText;
	var str=$(
			'<a href="javascript:void(0)" class="btn btn-info btn-xs" onclick="del(this);">'+nameVal
			+'<input type="hidden" name="dataId" value="'+id+'" />'+'<em class="glyphicon glyphicon-remove"></em></a><span> </span>'
			);
	$('#'+listname).append(str);
}