asp ajax注册验证之 防止用户名输入空格

check.asp 

复制代码代码如下:

<% 
'''''''''''''''''''''''''''''''''''' 
Function ReplaceText(fString,patrn,replStr) 
    Set regEx = New RegExp     ' 建立正则表达式。 
        regEx.Pattern = patrn ' 设置模式。 
        regEx.IgnoreCase = True ' 设置是否区分大小写。 
        regEx.Global = True ' 设置全局可用性。 
        ReplaceText = regEx.Replace(""&fString&"",""&replStr&"") ' 作替换。 
    Set regEx=nothing 
End Function 
'''''''''''''''''''''''''''''''''''' 
'''''''''''''''''''''''''''''''''''' 
Function HTMLEncode(fString) 
    fString=Trim(fString) 
    fString=Replace(fString,CHR(9),"") 
    fString=Replace(fString,CHR(13),"") 
    fString=Replace(fString,CHR(22),"") 
    fString=Replace(fString,CHR(38),"&")    '“&” 
    fString=Replace(fString,CHR(32)," ")    '“ ” 
    fString=Replace(fString,CHR(34),""")    '“"” 
    fString=Replace(fString,CHR(37),"%")    '“%” 
    fString=Replace(fString,CHR(39),"'")    '“'” 
    fString=Replace(fString,CHR(42),"*")    '“*” 
    fString=Replace(fString,CHR(43),"+")    '“+” 
    fString=Replace(fString,CHR(44),",")    '“,” 
    fString=Replace(fString,CHR(45)&CHR(45),"--")    '“--” 
    fString=Replace(fString,CHR(92),"\")    '“\” 
    'fString=Replace(fString,CHR(95),"_")    '“_” 
    fString=Replace(fString,CHR(40),"(")    '“(” 
    fString=Replace(fString,CHR(41),")")    '“)” 
    fString=Replace(fString,CHR(60),"<")    '“<” 
    fString=Replace(fString,CHR(62),">")    '“>” 
    fString=Replace(fString,CHR(123),"{")    '“{” 
    fString=Replace(fString,CHR(125),"}")    '“}” 
    fString=Replace(fString,CHR(59),";")    '“;” 
    fString=Replace(fString,CHR(10),"<br>") 
    fString=ReplaceText(fString,"([&#])([a-z0-9]*);","$1$2;") 
    fString=ReplaceText(fString,"(fuck|shit)",string(len("&$1&"),"*")) 
    if IsSqlDataBase=0 then '过滤片假名(日文字符)[\u30A0-\u30FF] by yuzi 
        fString=escape(fString) 
        fString=ReplaceText(fString,"%u30([A-F][0-F])","0$1;") 
        fString=unescape(fString) 
    end if 
    HTMLEncode=fString 
End Function 
'''''''''''''''''''''''''''''''''''' 
'''''''''''''''''''''''''''''''''''' 
Function RequestInt(fString) 
    RequestInt=Request(fString) 
    if IsNumeric(RequestInt) then 
        RequestInt=int(RequestInt) 
    else 
        RequestInt=0 
    end if 
End Function 
'''''''''''''''''''''''''''''''''''' 
UserName=HTMLEncode(unescape(Request.QueryString("UserName"))) 
UserNameLength=RequestInt("UserNameLength") 
If len(UserName)<>UserNameLength Then 
    response.write "用户名非法！" 
Else 
    response.write "用户名合法！" 
End If 
%> 

HTMLEncode 函数是将用户名转换成合法字符的必须步骤。 
RequestInt 函数主要根据输入有效字符的个数判断用户名是否包含空格。 
调用方法：check.asp?UserName=用户名&UserNameLength=用户名长度 
check.asp一般用于Ajax判断