收集整理些有用的JAVASCRIPT小知识 - 站长论坛

以下是引用片段：
function isValidDate( year, month, day )
{
year  = parseInt(year,10);
month = parseInt(month,10);
day = parseInt(day,10);
if (( month==4) || (month==6) || (month==9) || (month==11) )
{ if (( day < 1) || (day > 30) )
   { alert( "日期在1 - 30之间" );
   return (false);
   }
}
else
{ if ( month!=2 )
   { if ( (day < 1) || (day > 31 ))
   {  alert( "日期在1 - 31之间" );
      return (false);
   }
   }
   else
   { // month == 2
   if ( ( year % 100 ) != 0 && (year % 4 == 0) || ( year % 100 ) == 0 && ( year % 400) == 0 )
   { if ( day > 29 )
      {  alert( "日期在1 - 29之间" );
         return (false);
      }
   }
   else
   { if ( day > 28 )
      { alert( "日期在1 - 28之间" );
         return (false);
      }
   }
   }
}
return (true);
}
function isIdCardNo(s)
{
if ((s.length <15)||(s.length ==16)||(s.length ==17)||(s.length >18)){
window.alert("身份证位数不正确!");
return false;
  }

slen=s.length-1;//身份证除最后一位外，必须为数字！
for (i=0; i<slen; i++)
{
  cc = s.charAt(i);
  if (cc <"0" || cc >"9")
  {
return false;
  }
}
//提取年月日
var strYear = parseInt(s.substring(6,10))
var strMonth = parseInt(s.substring(10,12))
var strDay =  parseInt(s.substring(12,14))
// Form1.year的代码根据个人情况变动
var vYear=parseInt(document.Form1.year.options[document.Form1.year.selectedIndex].text)
var vMonth=parseInt(document.Form1.month.options[document.Form1.month.selectedIndex].text)
var vDay=parseInt(document.Form1.day.options[document.Form1.day.selectedIndex].text)
//判断输入的出生年月日是否是正确的日期
if(!isValidDate(strYear,strMonth,strDay))
{
  window.alert("请检查身份证是否输入正确!");
return false;
}
//判断是否与出生年月日吻合
if((strYear!=vYear)||(strMonth!=vMonth)||(strDay!=vDay))
{
  window.alert("身份证号与输入的出生年月日不符!");
return false;
}
//document.Form1.ceshi.value=strMonth
//document.Form1.ceshi2.value=vMonth
return true;
}

<%@LANGUAGE="VBSCRIPT" CODEPAGE="936"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>Untitled Document</title>
<STYLE type=text/css>TD {
FONT-SIZE: 12px
}
SELECT {
FONT-SIZE: 12px
}
INPUT {
FONT-SIZE: 12px
}
A {
TEXT-DECORATION: none
}
A:hover {
COLOR: #c90000; TEXT-DECORATION: none
}
</STYLE>
<SCRIPT LANGUAGE="JavaScript">

</SCRIPT>
<body>
<%'存储数据库的过程
n=trim(request("num"))
if n<>"" then
i=1
y=0
do while not n<0
conn.execute("update BigClass_New set paixu="&i&" where BigClassID="&trim(request(("slt")&y))&"")
'我用的办法是在数据库表里加个字段定义排序，然后显示时就靠它了
'trim(request(("slt")&y))是动态获取input的值，做循环的的时候
'都这么用
n=n-1
i=i+1
y=y+1
loop
response.Write("<SCRIPT>alert('修改成功');location='News_ClassManage.asp';</SCRIPT>")
'response.End()
else
%>
<div align="center">
<table class="border" border="0" cellspacing="2" width="620" cellpadding="0" style="word-break:break-all">
      <%
Set rs= Server.CreateObject("ADODB.Recordset")
sql="select * from BigClass_New order by paixu"
rs.open sql,conn,1,1
if not rs.eof then
'我的数据库表名叫BigClass_New%>
<form name="paixu" method="post" action="News_ClassPaixu.asp">
<tr bgcolor="#A4B6D7" class="title">
         <td width="50%" height="55" align="right">
<div align="right">
<SELECT NAME="sltFruit" size="<%=rs.recordcount%>">
<%do while not rs.eof %>
<OPTION VALUE="<%=trim(rs("BigClassID"))%>"><%=trim(rs("BigClassName"))%></OPTION>
<%rs.movenext
loop%>
</SELECT>

</div>
</td>
         <td width="40"  height="25" align="center">
<INPUT TYPE="BUTTON" ID="btnPutUp" VALUE="上移"  onClick="javascript:return putUp();">
<INPUT TYPE="BUTTON" ID="btnPutDown" VALUE="下移" onClick="javascript:return putDown();">
</td>
      </tr>
<%rs.movefirst
i=0
do while not rs.eof %>
<input type="hidden" name="slt<%=i%>" value="<%=trim(rs("BigClassID"))%>">
<%
rs.movenext
i=i+1
loop%>
<input type="hidden" name="num" value="<%=i-1%>">
   <tr bgcolor="#A4B6D7" class="title">
         <td width="560" height="55" align="center" colspan="2">
<input type="submit" name="save" value="保存">
</td>
      </tr>
</form>
<%else%>
<tr bgcolor="#A4B6D7" class="title">
         <td width="36" height="55" align="center" colspan="2">
<%response.Write("请先输入大类！")%>
</td>
      </tr>
</table>
</div>
<%end if%>

<%end if%>
</body>
</html>