ASP

String

request to get left side of string :: count by setting number

取出字串由左1位開始算的字元 :: 可設要取的字數

Form:: Left(Txt,n)

calling left side of string and returning characters from string::
request 7 characters from "welcome learning" as the string
(one Chinese character = 2 English characters)

傳回一字串由左1位開始算的字元
(一中文=兩個英文字元)

ASP

String

request to get right side of string :: count by setting number

取出字串由右1位開始向左算的字元 :: 可設要取的字數

calling begin from the right side of 
string and returning characters from 

string:: request 8 characters from "welcome learning" 
as the string (one Chinese character space= 2 English characters)

傳回一字串由右的第1位開始向左算的字元 (一中文=兩個英文字元)

ASP

String

String text length (counting characters include space)

字串長度 (算出字元長度)

Len(X): to count the total length of a string X

example: often be used at submit required
a length of characters limitation

usage: often combines with Trim(X), Right(X,n), Left(X,n), Min(X,m,n)
--------------------------------
do not use length(________)
do not use len("_______")

Len(X): 算出X自串字元長度
(通常一中文字等於兩個英文字元)

例: 常在傳送前檢查字串的長短是否吻合要求

使用: 常合併與Trim(X), Right(X,n), Left(X,n), Min(X,m,n) 一起使用

ASP

String

Mid(string,start[,length])

截取字串中間的字元

Form:: Mid(string,start[,length])
Mid(Txt,n)
Mid(Txt,n,m)
Txt  is  string
n     is  starting place
m    is   length .... is not necessary : no length = to the end

讀取一字串中由指定的位置算起,截取指定的長度
Txt  : 字串
n     :  起點位置
m    :  長度

ASP

String

split long strings by any " string "

以 某 " 字串 " 分隔某長字串

strArray = Split(Longstr, "str")

陣列 = 分隔指令 (長字串, "短字串")
使用短字串來分隔長字串

ASP

String

Replace

替換

ASP

String

ASP : Trim( string )

去掉字串左右空格

To delete two spaces at the beginning and the end.

######
but trim may not prevent chr(255)　
asc: "Alt+255"

去掉字串左右空格

ASP

String

like '%xampl%'  to search for a pattern

尋找一特定樣式

like '%_____%'