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全角英文转为半角

[摘要]<html><head><title>将全角转为半角,半角转为全角</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312...

<html>
<head>
<title>将全角转为半角,半角转为全角</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>

<body bgcolor="#FFFFFF">

<%
'---------------------------------------
'编写:johnsun Email:zjs@dagongbao.com
'语言:ASP+VBScript 转摘请保留版权说明
'direction:"1"大写转小写;"-1"小写转大写
'---------------------------------------

dim contentA,contentB
contentA=request.form("contentA")
if contentA<>"" then
    CALL contentstr(contentA,"1")
end if
contentB=request.form("contentB")
if contentB<>"" then
    CALL contentstr(contentB,"-1")
end if

function contentstr(content,direction)
    dim strbig,tstrbig,strsma,tstrsma
    strbig="ABCDEFGHIJKLMNOPQRSTUVWXYZ'"
    tstrbig="ABCDEFGHIJKLMNOPQRSTUVWXYZ'"
    strsma="abcdefghijklmnopqrstuvwxyz"
    tstrsma="abcdefghijklmnopqrstuvwxyz"
    dim b(26),tb(26),s(25),ts(25)
    for i=1 to 26
        b(i-1)=mid(strbig,i,1)
        tb(i-1)=mid(tstrbig,i,1)
    if direction="1" then
        content=replace(content,b(i-1),tb(i-1))
    elseif direction="-1" then
        content=replace(content,tb(i-1),b(i-1))
    end if
        s(i-1)=mid(strsma,i,1)
        ts(i-1)=mid(tstrsma,i,1)
    if direction="1" then
        content=replace(content,s(i-1),ts(i-1))
    elseif direction="-1" then
        content=replace(content,ts(i-1),s(i-1))
    end if
    next
'-------------------------------------------
content=replace(content,chr(13)&chr(10),"<br>")
    if direction="1" then
        content=replace(content,""," ")
    else
        content=replace(content," ","")
    end if
'-------------------------------------------
    contentstr=content
    if direction="1" then
        response.write "大写转小写:<br>"
    else
        response.write "小写转大写:<br>"
    end if
    response.write contentstr & "<BR>"
end function
%>
<form action='d.asp' method="post">
大写转小写:
  <textarea name="contentA" rows="8" cols="30">
A lady said to her friend that the sun is the most beautiful and useful body。
A gentlman answered:“Yes,Madam,the sun is a very fine body,but in my opinion,it is not so useful as the moom.”
“Why?”asked the lady.
“Because,”replied the gentleman,“the moon affords us light in the might-time,when we really want it,whereas we have the sun always with us in the day-time,when we have not so much meed of it.”</textarea>
  <br>
  小写转大写:
  <textarea name="contentB" rows="8" cols="30">
Arctic Explorer Boy:Dad,when I grow up I want to be an Arctic Explorer.
Father:That's fine,Bill.
Boy:But I want to go into training at once.
Father:And so﹖
Boy:Well,I want a dollar a day for ice-cream so I'll get used to the cold.
</textarea>
  <br>
  <input type="submit" name="Submit" value="Submit">
</form>
</body>
</html>