<%
if trim(request("action"))="add" then
if request.form("cn_name1")=Empty or request.Form("pwd")=Empty or request.Form("pwd2")=Empty or request.Form("class")=Empty then
response.Write("<script language=javascript>" & chr(13) & "alert(‘错误:请将信息输入完整!带*项必须填写!‘);" & "javascript:history.go(-1)" & "</script>")
elseif request.form("pwd") <> request.form("pwd2") then
response.write("<script language=‘javascript‘> alert(‘错误:密码与确认密码不符!‘); javascript:history.go(-1) </script>")
elseif len(request.form("cn_name1"))>16 then
response.write("<script language=‘javascript‘> alert(‘错误:用户名长度超过16个字符,10个汉字‘); javascript:history.go(-1) </script>")
elseif len(request.form("cn_name1"))<4 then
response.write("<script language=‘javascript‘> alert(‘错误:用户名长度少于4个字符,2个汉字‘); javascript:history.go(-1) </script>")
elseif len(request.form("class"))<2 then
response.write("<script language=‘javascript‘> alert(‘错误:班级名称少于4个字符!‘); javascript:history.go(-1) </script>")
elseif len(request.form("pwd"))>20 or len(request.form("pwd"))<6 then
response.write("<script language=‘javascript‘> alert(‘错误:你输入的密码长度不符合!‘); javascript:history.go(-1) </script>")
end if
end if
%>
asp数据校验
原文地址：https://www.cnblogs.com/ince/p/9154754.html