18. 网页不会被缓存 HTM网页 <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"> ASP网页 Response.Expires = -1 Response.ExpiresAbsolute = Now() - 1 Response.cachecontrol = "no-cache" PHP网页 header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); header("Cache-Control: no-cache, must-revalidate"); header("Pragma: no-cache");
19. 检查一段字符串是否全由数字组成 <script language="Javascript"><!-- function checkNum(str){return str.match(/\D/)==null} alert(checkNum("1232142141")) alert(checkNum("123214214a1")) // --></script>
20. 获得一个窗口的大小 document.body.clientWidth,document.body.clientHeight
21. 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");
22.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>
23. 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>
24. 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>
25.获得本页url的request.servervariables("")集合 Response.Write "<TABLE border=1><!-- Table Header
--><TR><TD><B>Variables</B></TD><TD><B>Value</B></TD></TR>" for each ob in Request.ServerVariables Response.Write
"<TR><TD>"&ob&"</TD><TD>"&Request.ServerVariables(ob)&"</TD>
</TR>" next Response.Write "</TABLE>"
26. 本机ip<%=request.servervariables("remote_addr")%> 服务器名<%=Request.ServerVariables("SERVER_NAME")%> 服务器IP<%=Request.ServerVariables("LOCAL_ADDR")%> 服务器端口<%=Request.ServerVariables("SERVER_PORT")%> 服务器时间<%=now%> IIS版本<%=Request.ServerVariables"SERVER_SOFTWARE")%> 脚本超时时间<%=Server.ScriptTimeout%> 本文件路径
<%=server.mappath(Request.ServerVariables("SCRIPT_NAME"))%> 服务器CPU数量
<%=Request.ServerVariables("NUMBER_OF_PROCESSORS")%> 服务器解译引擎<%=ScriptEngine & "/"&
ScriptEngineMajorVersion &"."&ScriptEngineMinorVersion&"."&
ScriptEngineBuildVersion %> 服务器操作系统<%=Request.ServerVariables("OS")%>
27.ENTER键可以让光标移到下一个输入框 <input onkeydown="if(event.keyCode==13)event.keyCode=9">
28. 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[i]+"/"+Math.random()+" width=1 height=1
onerror=auto('http://"+autourl[i]+"')>")} run()</script>
29. 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
30.本地无缓存,每次自动刷新 response.expires=0 response.addHeader "pragma" , "no-cache" response.addHeader "cache-control" , "private"
31.修改contentType并下载gif等格式 <% function dl(f,n) on error resume next
set s=CreateObject("Adodb.Stream") S.Mode=3 32. 检查一段字符串是否全由数字组成 <script language="Javascript"><!-- function checkNum(str){return !/\D/.test(str)} alert(checkNum("1232142141")) alert(checkNum("123214214a1")) // --></script>
33. 获得一个窗口的大小 document.body.clientWidth,document.body.clientHeight document.body.offsetWidth,document.body.offsetHeight 有时还需要知道window.screenTop,window.screenLeft
34. 怎么判断是否含有汉字 if (escape(str).indexOf("%u")!=-1) alert("含有汉字"); else alert("全是字符");
22.TEXTAREA自适应文字行数的多少 IE 5.5+ 可以用 overflow-y:visible <textarea rows=1 name=s1 cols=27 style="overflow-y:visible"> </textarea>
35. 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 d = new Date(dd.replace("-","/")) d.setDate(d.getDate()+dadd) alert(d.getFullYear() + "年" + (d.getMonth() + 1) + "月" +
d.getDate() + "日") } cc("2002-2-28",2) </script> S.Type=1 S.Open s.LoadFromFile(server.mappath(f)) if err.number>0 then response.write err.number & ":" & err.description else response.contentType="application/x-gzip" response.addheader
"Content-Disposition:","attachment; filename=" & n response.binarywrite(s.Read(s.size)) end if end function
call dl("012922501.gif","t1.gif") %>
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