# HTML JQ 动态添加删除行
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>动态添加删除行</title>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
$(function () {
var show_count = 20; //要显示的条数
var count = 1; //递增的开始值，这里是你的ID
$("#btn_addtr").click(function () {
var length = $("#dynamicTable tbody tr").length;
//alert(length);
if (length < show_count) //点击时候，如果当前的数字小于递增结束的条件
{
$("#tab11 tbody tr").clone().appendTo("#dynamicTable tbody"); //在表格后面添加一行
changeIndex();//更新行号
}
});
});
function changeIndex() {
var i = 1;
$("#dynamicTable tbody tr").each(function () { //循环tab tbody下的tr
$(this).find("input[name='NO']").val(i++);//更新行号
});
}
function deltr(opp) {
var length = $("#dynamicTable tbody tr").length;
//alert(length);
if (length <= 1) {
alert("至少保留一行");
} else {
$(opp).parent().parent().remove();//移除当前行
changeIndex();
}
}
</script>
</head>
<body>
<div style="width:720px;margin:20px auto;">
<table id="tab11" style="display: none">
<tbody>
<tr>
<td height="30" align="center">
<input type="text" name="NO" size="2" value="1" /></td>
<td align="center">
<input type="text" name="start_end_time" /></td>
<td align="center">
<input type="text" name="unit_department" /></td>
<td align="center">
<input type="text" name="post" /></td>
<td>
<input type="button" id="Button1" onClick="deltr(this)" value="删行">
</td>
</tr>
</tbody>
</table>
<input type="button" id="btn_addtr" value="增行">
<table id="dynamicTable" width="700" border="0" cellspacing="0" cellpadding="0">
<thead>
<tr>
<td height="30" align="center" bgcolor="#CCCCCC">ID</td>
<td align="center" bgcolor="#CCCCCC">起止时间</td>
<td align="center" bgcolor="#CCCCCC">单位/部门</td>
<td align="center" bgcolor="#CCCCCC">职位</td>
<td></td>
</tr>
</thead>
<tbody>
<tr>
<td height="30" align="center">
<input type="text" name="NO" size="2" value="1" /></td>
<td align="center">
<input type="text" name="start_end_time" /></td>
<td align="center">
<input type="text" name="unit_department" /></td>
<td align="center">
<input type="text" name="post" /></td>
<td>
<input type="button" id="Button2" onClick="deltr(this)" value="删行">
</td>
</tr>
</tbody>
</table>
</div>
</body>
</html>