asp如何把字符串两端出现的逗号去掉

[themass]

我有类似如下的字符串
字符串1=",1,2,3,4,"
字符串1="1,2,3,4,"
字符串1=",1,2,3,4"

要求处理后如下
字符串1="1,2,3,4"
字符串1="1,2,3,4"
字符串1="1,2,3,4"

处理后的字符串需要两端的不要出现逗号，用asp如何做呀

[若白师妹]

第一天写代码?

[小逗狗]

字符串1=left(字符串1,8)
字符串1=right(字符串1,7)

[gingerkang]

a=",1,2,3,4,"
response.write mid(replace(","& a &",",",,",","),2,len(replace(","& a &",",",,",","))-2)

[jbj001]

判断一下么好了:
if left(str,1)="," then
str=mid(str,2,len(str)-1)
end if


if right(str,1)="," then
str=mid(str,1,len(str)-1)
end if
具体的话自己再调试下

[jbj001]

当然也可以先用replace(str,","," "),然后trim(str),再用替换replace(str," ","，")

[银狐被占用]

function replacetext(txt)
f_flag = 0
f_str = ""
f_txt = split(txt,",")
for fi = 0 to Ubound(f_txt)
	if Trim(f_txt(fi)) <> "" then
	   f_flag = 1
	   if f_str <> "" then f_str = f_str & ","
	   f_str = f_str & f_txt(fi)
	else
		if f_flag = 1 And fi < Ubound(f_txt) Then
			if f_str <> "" then f_str = f_str & ","
			f_str = f_str & f_txt(fi)
		End if
	end if
Next
replacetext = f_str
end Function

将字符串传到函数据转换一下就可以了。