网页制作必备之初级代码

作者:ilank 日期:2007-01-05

字体大小: 小中大

1.获得系统时间:
<%=now()%>

2.取得来访用的IP:
<%=request.servervariables("remote_host")%>

3.获得系统,浏览器版本:
<script>
window.document.write("版本："+navigator.appName+navigator.appVersion+" browser.")
</script>

4.去除IE混动条:
<body scroll="no">
<body style="overflow-y:hidden">

5.进入网站,跳出广告:
<script language="javascript">

window.open(''http://www.******.com','''',''height=200,width=300,top=0,left=30'');
// -->
</script>

6.随机数:
<%randomize%>
<%=(int(rnd()*n)+1)%>
N为可改变数

7.向上混动代码:
<marquee direction="up" scrolldelay="200" style="font-size: 9pt; color: #FF0000; line-height: 150%; font-style:italic; font-weight:bold" scrollamount="2" width="206" height="207" bgcolor="#FFFF00">hhhhhhhhhhhhhhhhhhh</marquee>

8.自动关闭网页:
<script LANGUAGE="javascript">

</script>
<p align="center">本页10秒后自动关闭,请注意刷新页面</p>

9.随机背景音乐:
<%randomize%>
<bgsound src="mids/<%=(int(rnd()*60)+1)%>.mid" loop="-1">　

可以修改数字，限制调用个数，我这里是６０个．

10.自动刷新本页面:
<script>

</script>

11.ACCESS数据库连接:
<%
option explicit
dim startime,endtime,conn,connstr,db
startime=timer()
'更改数据库名字
db="data/dvBBS5.mdb"
Set conn = Server.CreateObject("ADODB.Connection")
connstr="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath(db)
'如果你的服务器采用较老版本Access驱动，请用下面连接方法
'connstr="driver={Microsoft Access Driver (*.mdb)};dbq=" & Server.MapPath(db)
conn.Open connstr
function CloseDatabase
Conn.close
Set conn = Nothing
End function
%>

12.SQL数据库连接:
<%
option explicit
dim startime,endtime,conn,connstr,db
startime=timer()
connstr="driver={SQL Server};server=HUDENQ-N11T33NB;uid=sa;pwd=xsfeihu;database=dvbbs"
Set conn = Server.CreateObject("ADODB.Connection")
conn.Open connstr
function CloseDatabase
Conn.close
Set conn = Nothing
End function
%>

13.用键盘打开网页代码:
<script language="javascript">
function ctlent(eventobject)
{
if((event.ctrlKey && window.event.keyCode==13)||(event.altKey && window.event.keyCode==83))
{
window.open('网址','','')
}
}
</script>　

这里是Ctrl+Enter和Alt+S的代码自己查下键盘的ASCII码再换就行

14.让层不被控件复盖代码:
<div z-Index:2><object ***></object></div> ＃前面
<div z-Index:1><object ***></object></div> ＃后面
<div id="Layer2" style="position:absolute; top:40;width:400px; height:95px;z-index:2"><table height=100% width=100% bgcolor="#ff0000"><tr><td height=100% width=100%></td></tr></table><iframe width=0 height=0></iframe></div>
<div id="Layer1" style="position:absolute; top:50;width:200px; height:115px;z-index:1"><iframe height=100% width=100%></iframe></div>

15.FLASH广告代码:
<object classid="clsid27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0" width="468" height="60"><param name=movie value="images/yj16d.swf"><param name=quality value=high><embed src="images/dvbanner.swf" quality=high pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash";;;; type="application/x-shockwave-flash" width="468" height="60"></embed></object>

16.VBS弹出窗口小代码:
<script language=vbscript>
msgbox"你还没有注册或登陆论坛","0","精品论坛"
location.href = "login.asp"
</script>
16.使用FSO修改文件特定内容的函数
function FSOchange(filename,Target,String)
Dim objFSO,objCountFile,FiletempData
Set objFSO = Server.CreateObject("scripting.FileSystemObject")
Set objCountFile = objFSO.OpenTextFile(Server.MapPath(filename),1,True)
FiletempData = objCountFile.ReadAll
objCountFile.Close
FiletempData=Replace(FiletempData,Target,String)
Set objCountFile=objFSO.CreateTextFile(Server.MapPath(filename),True)
objCountFile.Write FiletempData
objCountFile.Close
Set objCountFile=Nothing
Set objFSO = Nothing
End function

17.使用FSO读取文件内容的函数
function FSOFileRead(filename)
Dim objFSO,objCountFile,FiletempData
Set objFSO = Server.CreateObject("scripting.FileSystemObject")
Set objCountFile = objFSO.OpenTextFile(Server.MapPath(filename),1,True)
FSOFileRead = objCountFile.ReadAll
objCountFile.Close
Set objCountFile=Nothing
Set objFSO = Nothing
End function

18.使用FSO读取文件某一行的函数
function FSOlinedit(filename,lineNum)
if linenum < 1 then exit function
dim fso,f,temparray,tempcnt
set fso = server.CreateObject("scripting.filesystemobject")
if not fso.fileExists(server.mappath(filename)) then exit function
set f = fso.opentextfile(server.mappath(filename),1)
if not f.AtEndofStream then
tempcnt = f.readall
f.close
set f = nothing
temparray = split(tempcnt,chr(13)&chr(10))
if lineNum>ubound(temparray)+1 then
exit function
else
FSOlinedit = temparray(lineNum-1)
end if
end if
end function

19.使用FSO写文件某一行的函数
function FSOlinewrite(filename,lineNum,Linecontent)
if linenum < 1 then exit function
dim fso,f,temparray,tempCnt
set fso = server.CreateObject("scripting.filesystemobject")
if not fso.fileExists(server.mappath(filename)) then exit function
set f = fso.opentextfile(server.mappath(filename),1)
if not f.AtEndofStream then
tempcnt = f.readall
f.close
temparray = split(tempcnt,chr(13)&chr(10))
if lineNum>ubound(temparray)+1 then
exit function
else
temparray(lineNum-1) = lineContent
end if
tempcnt = join(temparray,chr(13)&chr(10))
set f = fso.createtextfile(server.mappath(filename),true)
f.write tempcnt
end if
f.close
set f = nothing
end function

20.使用FSO添加文件新行的函数
function FSOappline(filename,Linecontent)
dim fso,f
set fso = server.CreateObject("scripting.filesystemobject")
if not fso.fileExists(server.mappath(filename)) then exit function
set f = fso.opentextfile(server.mappath(filename),8,1)
f.write chr(13)&chr(10)&Linecontent
f.close
set f = nothing
end function
21.读文件最后一行的函数
function FSOlastline(filename)
dim fso,f,temparray,tempcnt
set fso = server.CreateObject("scripting.filesystemobject")
if not fso.fileExists(server.mappath(filename)) then exit function
set f = fso.opentextfile(server.mappath(filename),1)
if not f.AtEndofStream then
tempcnt = f.readall
f.close
set f = nothing
temparray = split(tempcnt,chr(13)&chr(10))
FSOlastline = temparray(ubound(temparray))
end if
end function
利用FSO取得BMP，JPG，PNG，GIF文件信息(大小，宽、高等)
<%
'::: BMP, GIF, JPG and PNG :::　

'::: This function gets a specified number of bytes from any :::
'::: file, starting at the offset (base 1) :::
'::: :::
'::: Passed: :::
'::: flnm => Filespec of file to read :::
'::: offset => Offset at which to start reading :::
'::: bytes => How many bytes to read :::
'::: :::
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
function GetBytes(flnm, offset, bytes)
Dim objFSO
Dim objFTemp
Dim objTextStream
Dim lngSize
on error resume next
Set objFSO = CreateObject("scripting.FileSystemObject")　

' First, we get the filesize
Set objFTemp = objFSO.GetFile(flnm)
lngSize = objFTemp.Size
set objFTemp = nothing
fsoForReading = 1
Set objTextStream = objFSO.OpenTextFile(flnm, fsoForReading)
if offset > 0 then
strBuff = objTextStream.Read(offset - 1)
end if
if bytes = -1 then ' Get All!
GetBytes = objTextStream.Read(lngSize) 'ReadAll
else
GetBytes = objTextStream.Read(bytes)
end if
objTextStream.Close
set objTextStream = nothing
set objFSO = nothing
end function

':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
'::: :::
'::: functions to convert two bytes to a numeric value (long) :::
'::: (both little-endian and big-endian) :::
'::: :::
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
function lngConvert(strTemp)
lngConvert = clng(asc(left(strTemp, 1)) + ((asc(right(strTemp, 1)) * 256)))
end function
function lngConvert2(strTemp)
lngConvert2 = clng(asc(right(strTemp, 1)) + ((asc(left(strTemp, 1)) * 256)))
end function

':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
'::: :::
'::: This function does most of the real work. It will attempt :::
'::: to read any file, regardless of the extension, and will :::
'::: identify if it is a graphical image. :::
'::: :::
'::: Passed: :::
'::: flnm => Filespec of file to read :::
'::: width => width of image :::
'::: height => height of image :::
'::: depth => color depth (in number of colors) :::
'::: strImageType=> type of image (e.g. GIF, BMP, etc.) :::
'::: :::
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
function gfxSpex(flnm, width, height, depth, strImageType)
dim strPNG
dim strGIF
dim strBMP
dim strType
strType = ""
strImageType = "(unknown)"
gfxSpex = False
strPNG = chr(137) & chr(80) & chr(78)
strGIF = "GIF"
strBMP = chr(66) & chr(77)
strType = GetBytes(flnm, 0, 3)
if strType = strGIF then ' is GIF
strImageType = "GIF"
Width = lngConvert(GetBytes(flnm, 7, 2))
Height = lngConvert(GetBytes(flnm, 9, 2))
Depth = 2 ^ ((asc(GetBytes(flnm, 11, 1)) and 7) + 1)
gfxSpex = True
elseif left(strType, 2) = strBMP then ' is BMP
strImageType = "BMP"
Width = lngConvert(GetBytes(flnm, 19, 2))
Height = lngConvert(GetBytes(flnm, 23, 2))
Depth = 2 ^ (asc(GetBytes(flnm, 29, 1)))
gfxSpex = True
elseif strType = strPNG then ' Is PNG
strImageType = "PNG"
Width = lngConvert2(GetBytes(flnm, 19, 2))
Height = lngConvert2(GetBytes(flnm, 23, 2))
Depth = getBytes(flnm, 25, 2)
select case asc(right(Depth,1))
case 0
Depth = 2 ^ (asc(left(Depth, 1)))
gfxSpex = True
case 2
Depth = 2 ^ (asc(left(Depth, 1)) * 3)
gfxSpex = True
case 3
Depth = 2 ^ (asc(left(Depth, 1))) '8
gfxSpex = True
case 4
Depth = 2 ^ (asc(left(Depth, 1)) * 2)
gfxSpex = True
case 6
Depth = 2 ^ (asc(left(Depth, 1)) * 4)
gfxSpex = True
case else
Depth = -1
end select　

else
strBuff = GetBytes(flnm, 0, -1) ' Get all bytes from file
lngSize = len(strBuff)
flgFound = 0
strTarget = chr(255) & chr(216) & chr(255)
flgFound = instr(strBuff, strTarget)
if flgFound = 0 then
exit function
end if
strImageType = "JPG"
lngPos = flgFound + 2
ExitLoop = false
do while ExitLoop = False and lngPos < lngSize　

do while asc(mid(strBuff, lngPos, 1)) = 255 and lngPos < lngSize
lngPos = lngPos + 1
loop
if asc(mid(strBuff, lngPos, 1)) < 192 or asc(mid(strBuff, lngPos, 1)) > 195 then
lngMarkerSize = lngConvert2(mid(strBuff, lngPos + 1, 2))
lngPos = lngPos + lngMarkerSize + 1
else
ExitLoop = True
end if
loop
'
if ExitLoop = False then
Width = -1
Height = -1
Depth = -1
else
Height = lngConvert2(mid(strBuff, lngPos + 4, 2))
Width = lngConvert2(mid(strBuff, lngPos + 6, 2))
Depth = 2 ^ (asc(mid(strBuff, lngPos + 8, 1)) * 8)
gfxSpex = True
end if　

end if
end function

':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
'::: Test Harness :::
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::　

' To test, we'll just try to show all files with a .GIF extension in the root of C:
Set objFSO = CreateObject("scripting.FileSystemObject")
Set objF = objFSO.GetFolder("c:\")
Set objFC = objF.Files
response.write "<table border=""0"" cellpadding=""5"">"
For Each f1 in objFC
if instr(ucase(f1.Name), ".GIF") then
response.write "<tr><td>" & f1.name & "</td><td>" & f1.DateCreated & "</td><td>" & f1.Size & "</td><td>"
if gfxSpex(f1.Path, w, h, c, strType) = true then
response.write w & " x " & h & " " & c & " colors"
else
response.write " "
end if
response.write "</td></tr>"
end if
Next
response.write "</table>"
set objFC = nothing
set objF = nothing
set objFSO = nothing　

%>

22.点击返回上页代码:
<form>
<p><input TYPE="button" value="返回上一步" onCLICK="history.back(-1)"></p>
</form>

23.点击刷新代码:
<form>
<p><input TYPE="button" value="刷新按钮一"onCLICK="ReloadButton()"></p>
</form>
<script language="javascript"></script>　

24.点击刷新代码2:
<form>
<p><input TYPE="button" value="刷新按钮二" onClic="history.go(0)"> </p>
</form>　

<form>
<p><input TYPE="button" value="打开一个网站" onCLICK="HomeButton()"></p>
</form>
<script language="javascript"></script>　

25.弹出警告框代码:
<form>
<p><input TYPE="button" value="弹出警告框" onCLICK="AlertButton()"></p>
</form>
<script language="javascript"></script>　

26.状态栏信息
<form>
<p><input TYPE="button" value="状态栏信息" onCLICK="StatusButton()"></p>
</form>
<script language="javascript"></script>　

27.背景色变换
<form>
<p><input TYPE="button" value="背景色变换" onClick="BgButton()"></p>
</form>
<script>
function BgButton(){
if (document.bgColor=='#00ffff')
{document.bgColor='#ffffff';}
else{document.bgColor='#00ffff';}
}
</script>　

28.点击打开新窗口
<form>
<p><input TYPE="button" value="打开新窗口" onCLICK="NewWindow()"></p>
</form>
<script language="javascript"></script></body>
29.分页代码:
<%''本程序文件名为：Pages.asp%>
<%''包含ADO常量表文件adovbs.inc，可从"\Program Files\Common Files\System\ADO"目录下拷贝%>

<%''＊建立数据库连接，这里是Oracle8.05数据库
Set conn=Server.CreateObject("ADODB.Connection")
conn.Open "Provider=msdaora.1;Data Source=YourSrcName;User ID=YourUserID;Password=YourPassword;" 　

Set rs=Server.CreateObject("ADODB.Recordset") ''创建Recordset对象
rs.CursorLocation=adUseClient ''设定记录集指针属性
''＊设定一页内的记录总数，可根据需要进行调整
rs.PageSize=10 　

''＊设置查询语句
StrSQL="Select ID,姓名,住址,电话 from 通讯录 order By ID"
rs.Open StrSQL,conn,adOpenStatic,adLockReadOnly,adCmdText
%>
<HTML>
<HEAD>
<title>分页示例</title>
<script language=javascript>
//点击"[第一页]"时响应：
function PageFirst()
{
document.MyForm.CurrentPage.selectedIndex=0;
document.MyForm.CurrentPage.onchange();
}
//点击"[上一页]"时响应：
function PagePrior()
{
document.MyForm.CurrentPage.selectedIndex--;
document.MyForm.CurrentPage.onchange();
}
//点击"[下一页]"时响应：
function PageNext()
{
document.MyForm.CurrentPage.selectedIndex++;
document.MyForm.CurrentPage.onchange();
}
//点击"[最后一页]"时响应：
function PageLast()
{
document.MyForm.CurrentPage.selectedIndex=document.MyForm.CurrentPage.length-1;
document.MyForm.CurrentPage.onchange();
}
//选择"第？页"时响应：
function PageCurrent()
{ //Pages.asp是本程序的文件名
document.MyForm.action='Pages.asp?Page='+(document.MyForm.CurrentPage.selectedIndex+1)
document.MyForm.submit();
}
</script>
</HEAD>
<BODY bgcolor="#ffffcc" link="#008000" vlink="#008000" alink="#FF0000"">　

<%IF rs.Eof THEN
Response.Write("<font size=2 color=#000080>[数据库中没有记录！]</font>")
ELSE
''指定当前页码
If Request("CurrentPage")="" Then
rs.AbsolutePage=1
Else
rs.AbsolutePage=CLng(Request("CurrentPage"))
End If 　

''创建表单MyForm,方法为Get
Response.Write("<form method=Get name=MyForm>")
Response.Write("<p align=center><font size=2 color=#008000>")
''设置翻页超链接
if rs.PageCount=1 then
Response.Write("[第一页] [上一页] [下一页] [最后一页] ")
else
if rs.AbsolutePage=1 then
Response.Write("[第一页] [上一页] ")
Response.Write("[<a href=java script:PageNext()>下一页</a>] ")
Response.Write("[<a href=java script:PageLast()>最后一页</a>] ")
else
if rs.AbsolutePage=rs.PageCount then
Response.Write("[<a href=java script:PageFirst()>第一页</a>] ")
Response.Write("[<a href=java script:PagePrior()>上一页</a>] ")
Response.Write("[下一页] [最后一页] ")
else
Response.Write("[<a href=java script:PageFirst()>第一页</a>] ")
Response.Write("[<a href=java script:PagePrior()>上一页</a>] ")
Response.Write("[<a href=java script:PageNext()>下一页</a>] ")
Response.Write("[<a href=java script:PageLast()>最后一页</a>] ")
end if
end if
end if　

''创建下拉列表框，用于选择浏览页码
Response.Write("第<select size=1 name=CurrentPage onchange=PageCurrent()>")
For i=1 to rs.PageCount
if rs.AbsolutePage=i then
Response.Write("<option selected>"&i&"</option>") ''当前页码
else
Response.Write("<option>"&i&"</option>")
end if
Next
Response.Write("</select>页/共"&rs.PageCount&"页共"&rs.RecordCount&"条记录</font><p>")
Response.Write("</form>")　

''创建表格，用于显示
Response.Write("<table align=center cellspacing=1 cellpadding=1 border=1")
Response.Write(" bordercolor=#99CCFF bordercolordark=#b0e0e6 bordercolorlight=#000066>")　

Response.Write("<tr bgcolor=#ccccff bordercolor=#000066>") 　

Set Columns=rs.Fields 　

''显示表头
For i=0 to Columns.Count-1
Response.Write("<td align=center width=200 height=13>")
Response.Write("<font size=2><b>"&Columns(i).name&"</b></font></td>")
Next
Response.Write("</tr>")
''显示内容
For i=1 to rs.PageSize
Response.Write("<tr bgcolor=#99ccff bordercolor=#000066>")
For j=0 to Columns.Count-1
Response.Write("<td><font size=2>"&Columns(j)&"</font></td>")
Next
Response.Write("</tr>")　

rs.movenext
if rs.EOF then exit for
Next　

Response.Write("</table>") 　

END IF
%>
</BODY>
</HTML>

40种网页常用小技巧(JavaScript)
1. oncontextmenu="window.event.returnValue=false" 将彻底屏蔽鼠标右键
<table border oncontextmenu=return(false)><td>no</table> 可用于Table

2. <body onselectstart="return false"> 取消选取、防止复制

3. onpaste="return false" 不准粘贴

4. oncopy="return false;" oncut="return false;" 防止复制

5. <link rel="Shortcut Icon" href="favicon.ico"> IE地址栏前换成自己的图标

6. <link rel="Bookmark" href="favicon.ico"> 可以在收藏夹中显示出你的图标

7. <input style="ime-mode:disabled"> 关闭输入法

8. 永远都会带着框架
<script language="JavaScript"></script>

9. 防止被人frame
<SCRIPT LANGUAGE=JAVASCRIPT></SCRIPT>

10. 网页将不能被另存为
<noscript><iframe src=*.html></iframe></noscript>

11. <input type=button value=查看网页源代码
onclick="window.location = "view-source:"+ "http://www.pconline.com.cn"">

12.删除时确认
<a href="javascript :if(confirm("确实要删除吗?"))location="boos.asp?&areyou=删除&page=1"">删除</a>

13. 取得控件的绝对位置
//Javascript
<script language="Javascript">
function getIE(e){
var t=e.offsetTop;
var l=e.offsetLeft;
while(e=e.offsetParent){
t+=e.offsetTop;
l+=e.offsetLeft;
}
alert("top="+t+"/nleft="+l);
}
</script>

//VBScript
<script language="VBScript"></script>

14. 光标是停在文本框文字的最后
<script language="javascript">
function cc()
{
var e = event.srcElement;
var r =e.createTextRange();
r.moveStart("character",e.value.length);
r.collapse(true);
r.select();
}
</script>
<input type=text name=text1 value="123" onfocus="cc()">

15. 判断上一页的来源
javascript :
document.referrer

16. 最小化、最大化、关闭窗口
<object id=hh1 classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">
<param name="Command" value="Minimize"></object>
<object id=hh2 classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">
<param name="Command" value="Maximize"></object>
<OBJECT id=hh3 classid="clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11">
<PARAM NAME="Command" VALUE="Close"></OBJECT>
<input type=button value=最小化 onclick=hh1.Click()>
<input type=button value=最大化 onclick=hh2.Click()>
<input type=button value=关闭 onclick=hh3.Click()>
本例适用于IE

17.屏蔽功能键Shift,Alt,Ctrl
<script>
function look(){
if(event.shiftKey)
alert("禁止按Shift键!"); //可以换成ALT　CTRL
}
document.onkeydown=look;
</script>

18. 网页不会被缓存
<META HTTP-EQUIV="pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache, must-revalidate">
<META HTTP-EQUIV="expires" CONTENT="Wed, 26 Feb 1997 08:21:57 GMT">
或者<META HTTP-EQUIV="expires" CONTENT="0">

19.怎样让表单没有凹凸感？
<input type=text style="border:1 solid #000000">
或
<input type=text style="border-left:none; border-right:none; border-top:none; border-bottom:

1 solid #000000"></textarea>

20.<div><span>&<layer>的区别？
<div>(division)用来定义大段的页面元素，会产生转行
<span>用来定义同一行内的元素，跟<div>的唯一区别是不产生转行
<layer>是ns的标记，ie不支持，相当于<div>

21.让弹出窗口总是在最上面:
<body onblur="this.focus();">

22.不要滚动条?
让竖条没有:
<body style="overflow:scroll;overflow-y:hidden">
</body>
让横条没有:
<body style="overflow:scroll;overflow-x:hidden">
</body>
两个都去掉？更简单了
<body scroll="no">
</body>

23.怎样去掉图片链接点击后，图片周围的虚线？
<a href="#" onFocus="this.blur()"><img src="logo.jpg" border=0></a>

24.电子邮件处理提交表单
<form name="form1" method="post" action="mailto:****@***.com" enctype="text/plain">
<input type=submit>
</form>

25.在打开的子窗口刷新父窗口的代码里如何写？
window.opener.location.reload()

26.如何设定打开页面的大小
<body onload="top.resizeTo(300,200);">
打开页面的位置<body onload="top.moveBy(300,200);">

27.在页面中如何加入不是满铺的背景图片,拉动页面时背景图不动
<STYLE>
body
{background-image:url(logo.gif); background-repeat:no-repeat;
background-position:center;background-attachment: fixed}
</STYLE>

28. 检查一段字符串是否全由数字组成
<script language="Javascript"></script>

29. 获得一个窗口的大小
document.body.clientWidth; document.body.clientHeight

30. 怎么判断是否是字符
if (/[^/x00-/xff]/g.test(s)) alert("含有汉字");
else alert("全是字符");

31.TEXTAREA自适应文字行数的多少
<textarea rows=1 name=s1 cols=27 onpropertychange="this.style.posHeight=this.scrollHeight">
</textarea>
32. 日期减去天数等于第二个日期
<script language=Javascript>
function cc(dd,dadd)
{
//可以加上错误处理
var a = new Date(dd)
a = a.valueOf()
a = a - dadd * 24 * 60 * 60 * 1000
a = new Date(a)
alert(a.getFullYear() + "年" + (a.getMonth() + 1) + "月" + a.getDate() + "日")
}
cc("12/23/2002",2)
</script>

33. 选择了哪一个Radio
<HTML><script language="vbscript">
function checkme()
for each ob in radio1
if ob.checked then window.alert ob.value
next
end function
</script><BODY>
<INPUT name="radio1" type="radio" value="style" checked>Style
<INPUT name="radio1" type="radio" value="barcode">Barcode
<INPUT type="button" value="check" onclick="checkme()">
</BODY></HTML>

34.脚本永不出错
<SCRIPT LANGUAGE="JavaScript">

</SCRIPT>

35.ENTER键可以让光标移到下一个输入框
<input onkeydown="if(event.keyCode==13)event.keyCode=9">

36. 检测某个网站的链接速度：
把如下代码加入<body>区域中:
<script language=Javascript>
tim=1
setInterval("tim++",100)
b=1
var autourl=new Array()
autourl[1]="www.njcatv.net"
autourl[2]="javacool.3322.net"
autourl[3]="www.sina.com.cn"
autourl[4]="www.nuaa.edu.cn"
autourl[5]="www.cctv.com"
function butt(){
document.write("<form name=autof>")
for(var i=1;i<autourl.length;i++)
document.write("<input type=text name=txt"+i+" size=10 value=测试中……> =》<input type=text
name=url"+i+" size=40> =》<input type=button value=GO

onclick=window.open(this.form.url"+i+".value)><br>")
document.write("<input type=submit value=刷新></form>")
}
butt()
function auto(url){
document.forms[0]["url"+b].value=url
if(tim>200)
{document.forms[0]["txt"+b].value="链接超时"}
else
{document.forms[0]["txt"+b].value="时间"+tim/10+"秒"}
b++
}
function run(){for(var i=1;i<autourl.length;i++)document.write("<img src=http://"+autourl+"/"+Math.random()+" width=1 height=1

onerror=auto("http://"+autourl+"")>")}
run()</script>

37. 各种样式的光标
auto ：标准光标
default ：标准箭头
hand ：手形光标
wait ：等待光标
text ：I形光标
vertical-text ：水平I形光标
no-drop ：不可拖动光标
not-allowed ：无效光标
help ：?帮助光标
all-scroll ：三角方向标
move ：移动标
crosshair ：十字标
e-resize
n-resize
nw-resize
w-resize
s-resize
se-resize
sw-resize

38.页面进入和退出的特效
进入页面<meta http-equiv="Page-Enter" content="revealTrans(duration=x, transition=y)">
推出页面<meta http-equiv="Page-Exit" content="revealTrans(duration=x, transition=y)">
这个是页面被载入和调出时的一些特效。duration表示特效的持续时间，以秒为单位。transition表示使用哪种特效，取值为1-23:
　　0 矩形缩小
　　1 矩形扩大
　　2 圆形缩小
　　3 圆形扩大
　　4 下到上刷新
　　5 上到下刷新
　　6 左到右刷新
　　7 右到左刷新
　　8 竖百叶窗
　　9 横百叶窗
　　10 错位横百叶窗
　　11 错位竖百叶窗
　　12 点扩散
　　13 左右到中间刷新
　　14 中间到左右刷新
　　15 中间到上下
　　16 上下到中间
　　17 右下到左上
　　18 右上到左下
　　19 左上到右下
　　20 左下到右上
　　21 横条
　　22 竖条
　　23 以上22种随机选择一种

39.在规定时间内跳转
<META http-equiv=V="REFRESH" content="5;URL=http://www.51js.com">

40.网页是否被检索
<meta name="ROBOTS" content="属性值">
　　其中属性值有以下一些:
　　属性值为"all": 文件将被检索，且页上链接可被查询；
　　属性值为"none": 文件不被检索，而且不查询页上的链接；
　　属性值为"index": 文件将被检索；
　　属性值为"follow": 查询页上的链接；
　　属性值为"noindex": 文件不检索，但可被查询链接；
　　属性值为"nofollow": 文件不被检索，但可查询页上的链接。

[本日志由 ilank 于 2007-01-05 01:15 PM 编辑]