function checkDelForm() {
var uids = -1;
uids = document.getElementsByName("delUids").length;
if (uids == -1) {
alert("请选择要删除的用户");
return false;
} else {
return true;
}
}
<form name="userform" action="servlet/DeleteUserServet" method="post"
onsubmit="return checkDelForm()">
<table align="center" border="1" width="440px">
<tr>
<td colspan="6" align="center">用户资料</td>
</tr>
<tr>
<td align="center">用户姓名</td>
<td align="center">用户性别</td>
<td align="center">出生日期</td>
<td align="center">用户住址</td>
<td colspan=2 align="center">操作</td>
</tr>
<%
while (rs.next()) {
%>
<tr>
<td><%=rs.getString("uname")%></td>
<td><%=rs.getString("usex")%></td>
<td><%=rs.getString("ubirth")%></td>
<td><%=rs.getString("uaddr")%></td>
<td><a
href="UserListDetail.jsp?uid=<%=rs.getInt("uid")%>&&uname=<%=rs.getString("uname")%>&&usex=<%=rs.getString("usex")%>&&ubirth=<%=rs.getString("ubirth")%>&&uaddr=<%=rs.getString("uaddr")%>">编辑</a>
</td>
<td><input type="checkbox" name="delUids"
value="<%=rs.getInt("uid")%>"></td>
</tr>
<%
}
conn.close();
rs.close();
stmt.close();
%>
<tr>
<td colspan="6" align="center"><input type="submit" value="删除"
style="width: 82px; "> <font color="green"> ${msg} </font>
</td>
</tr>
</table>
</form>