Classic code for JavaScript operation on IE (recommended)_javascript skills

I have been using ajax technology to do stuff during this period, so I have more opportunities to learn JavaScript knowledge. I previously collected some codes on the Internet about JavaScript operating on IE (I can’t remember exactly where it is, so I won’t add the source). I feel it is very useful in the development process. Of course, it only applies to IE. FF will have problems. of. Post it now and share it.

Copy code The code is as follows:

1.将彻底屏蔽鼠标右键
oncontextmenu="window.event.returnvalue=false"
可用于Table

no

2.取消选取、防止复制

3.不准粘贴
onpaste="returnfalse"

4.防止复制
oncopy="returnfalse;"
oncut="returnfalse;"

5.IE地址栏前换成自己的图标

6.可以在收藏夹中显示出你的图标

7.关闭输入法

8.永远都会带着框架

9.防止被人frame

10.网页将不能被另存为

11.查看网页源代码

12.怎样通过asp的手段来检查来访者是否用了代理
<%ifRequest.ServerVariables("HTTP_X_FORWARDED_FOR")<>""then
response.write"您通过了代理服务器，"&_
"真实的IP为"&Request.ServerVariables("HTTP_X_FORWARDED_FOR")
endif
%>

13.取得控件的绝对位置
//javascript

functiongetIE(e)...{
vart=e.offsetTop;
varl=e.offsetLeft;
while(e=e.offsetParent)...{
t+=e.offsetTop;
l+=e.offsetLeft;
}
alert("top="+t+" left="+l);
}

//VBScript

14.光标是停在文本框文字的最后

functioncc()
...{
vare=event.srcElement;
varr=e.createTextRange();
r.moveStart('character',e.value.length);
r.collapse(true);
r.select();
}

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









本例适用于IE

17.
<%
'定义数据库连接的一些常量
ConstadOpenForwardOnly=0'游标只向前浏览记录，不支持分页、Recordset、BookMark
ConstadOpenKeyset=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
ConstadOpenDynamic=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)。
ConstadOpenStatic=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
ConstadLockReadOnly=1'锁定类型，默认的，只读，不能作任何修改
ConstadLockPessimistic=2'当编辑时立即锁定记录，最安全的方式
ConstadLockOptimistic=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
ConstadLockBatchOptimistic=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
ConstadCmdText=&H0001
ConstadCmdTable=&H0002
%>
18.网页不会被缓存
HTM网页



或者

ASP网页
Response.Expires=-1
Response.ExpiresAbsolute=Now()-1
Response.cachecontrol="no-cache"

PHP网页
header("Expires:Mon,26Jul199705:00:00GMT");
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

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(/[^�-ÿ]/g.test(s))alert("含有汉字");
elsealert("全是字符");

22.TEXTAREA自适应文字行数的多少

23.日期减去天数等于第二个日期

functioncc(dd,dadd)
{
//可以加上错误处理
vara=newDate(dd)
a=a.valueOf()
a=a-dadd*24*60*60*1000
a=newDate(a)
alert(a.getFullYear()+"年"+(a.getMonth()+1)+"月"+a.getDate()+"日")
}
cc("12/23/2002",2)

24.选择了哪一个Radio

functioncheckme()
foreachobinradio1
ifob.checkedthenwindow.alertob.value
next
endfunction

Style
Barcode

25.获得本页url的request.servervariables("")集合
Response.Write"Variablesvalue"
foreachobinRequest.ServerVariables
Response.Write""&ob&""&Request.ServerVariables(ob)&""
next
Response.Write""

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. The ENTER key can move the cursor to the next input box

28. Check the link speed of a website:
Add the following code to the area:

tim=1
setInterval("tim " ,100)
b=1
varautourl=newArray()
autourl[1]="< src="pic/url.gif" align=absMiddle border=0>www.njcatv.net"
autourl[2]="javacool.3322.net"
autourl[3]="< src="pic/url.gif" align=absMiddle border=0>www.sina.com.cn"
autourl[4]="www.nuaa.edu.cn"
autourl[5]="< src="pic/url.gif" align=absMiddle border=0>www.cctv.com"
functionbutt(){
document.write("")
for(vari=1;idocument.write("< inputtype=textname=txt" i "size=10value=Under testing...>=》=》
")
document.write("")
}
butt()
functionauto(url){
document.forms[0]["url" b].value=url
if(tim>200)
{document.forms[0][ "txt" b].value="Link timeout"}
else
{document.forms[0]["txt" b].value="Time" tim/10 "seconds"}
b
}
functionrun(){for(vari=1;ihttp://"; autourl[i] "')>")}
run()

29. Various styles of cursors
auto: standard cursor
default: standard arrow
hand: hand cursor
wait: waiting cursor
text: I-shaped cursor
vertical -text: horizontal I-shaped cursor
no-drop: non-dragable cursor
not-allowed: invalid cursor
help: ?Help cursor
all-scroll: triangular direction cursor
move: Move mark
crosshair: crosshair
e-resize
n-resize
nw-resize
w-resize
s-resize
se-resize
sw- resize

1. No local cache, automatically refreshed every time
response.expires=0
response.addHeader "pragma","no-cache"
response.addHeader "cache-control","private "

2. Modify contentType and download gif and other formats
<%
functiondl(f,n)
onerrorresumenext
sets=CreateObject("Adodb.Stream")
S.Mode =3
S.Type=1
S.Open
s.LoadFromFile(server.mappath(f))
iferr.number>0then
response.writeerr.number&":"&err .description
else
response.contentType="application/x-gzip"
response.addheader"Content-Disposition:","attachment;filename="&n
response.binarywrite(s.Read (s.size))
endif
endfunction
calldl("012922501.gif","t1.gif")
%>

19. Check whether a string consists entirely of numbers

20. Get the size of a window
document.body.clientWidth, document.body.clientHeight
document.body.offsetWidth, document.body.offsetHeight
Sometimes you also need to know window.screenTop, window .screenLeft

21. How to judge whether it contains Chinese characters
if(escape(str).indexOf("%u")!=-1)alert("Contains Chinese characters");
elsealert("All characters" );

22. The number of TEXTAREA adaptive text lines
IE5.5 can use overflow-y:visible

23. The date minus the number of days is equal to the second date

function cc(dd,dadd)
...{
//You can add error handling
vard=newDate(dd.replace("-","/"))
d.setDate(d.getDate() dadd)
alert(d.getFullYear() "Year" (d. getMonth() 1) "month" d.getDate() "day")
}
cc("2002-2-28",2)