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 "> <!--
if (window == top)top.location.href = "frames.htm "; //frames.htm为框架网页
// --> </script>
9. 防止被人frame
<SCRIPT LANGUAGE=javascript> <!--
if (top.location != self.location)top.location=self.location;
// --> </SCRIPT>
10. <noscript> <iframe src=*.html> </iframe> </noscript> 网页将不能被另存为
11. <input type=button value=查看网页源代码
onclick= "window.location = 'view-source: '+ 'http://www.csdn.net/ ' ">
12. 怎样通过asp的手段来检查来访者是否用了代理
<% if Request.ServerVariables( "HTTP_X_FORWARDED_FOR ") <> " " then
response.write " <font color=#FF0000> 您通过了代理服务器， "& _
"真实的IP为 "&Request.ServerVariables( "HTTP_X_FORWARDED_FOR ")
end if
%>
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 "> <!--
function getIE()
dim t,l,a,b
set a=document.all.img1
t=document.all.img1.offsetTop
l=document.all.img1.offsetLeft
while a.tagName <> "BODY "
set a = a.offsetParent
t=t+a.offsetTop
l=l+a.offsetLeft
wend
msgbox "top= "&t&chr(13)& "left= "&l,64, "得到控件的位置 "
end function
--> </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
asp:
request.servervariables( "HTTP_REFERER ")
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.
<%
'定义数据库连接的一些常量
Const adOpenForwardOnly = 0 '游标只向前浏览记录，不支持分页、Recordset、BookMark
Const adOpenKeyset = 1 '键集游标，其他用户对记录说做的修改将反映到记录集中，但其他用户增加或删除记录不会反映到记录集中。支持分页、Recordset、BookMark
Const adOpenDynamic = 2 '动态游标功能最强，但耗资源也最多。用户对记录说做的修改，增加或删除记录都将反映到记录集中。支持全功能浏览(ACCESS不支持)。
Const adOpenStatic = 3 '静态游标，只是数据的一个快照，用户对记录说做的修改，增加或删除记录都不会反映到记录集中。支持向前或向后移动
Const adLockReadOnly = 1 '锁定类型，默认的，只读，不能作任何修改
Const adLockPessimistic = 2 '当编辑时立即锁定记录，最安全的方式
Const adLockOptimistic = 3 '只有在调用Update方法时才锁定记录集，而在此前的其他操作仍可对当前记录进行更改、插入和删除等
Const adLockBatchOptimistic = 4 '当编辑时记录不会被锁定，而更改、插入和删除是在批处理方式下完成的
Const adCmdText = &H0001
Const adCmdTable = &H0002
%>
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
