通常在显示新闻标题的时候,有时候标题中会出现汉字和英文共存,直接用left截字符串会出现两条新闻标题长度不一,使用这个函数可以解决这个问题。
<%
'**************************************************
'函数名:gotTopic
'作 用:截字符串,汉字一个算两个字符,英文算一个字符
'参 数:str ----原字符串
' strlen ----截取长度
'返回值:截取后的字符串
'**************************************************
Function gotTopic(ByVal str, ByVal strlen)
If str = "" Then
gotTopic = ""
Exit Function
End If
Dim l, t, c, i, strTemp
str = Replace(Replace(Replace(Replace(str, " ", " "), """, Chr(34)), ">", ">"), "&lt;", "<")
l = Len(str)
t = 0
strTemp = str
strlen = CLng(strlen)
For i = 1 To l
c = Abs(Asc(Mid(str, i, 1)))
If c > 255 Then
t = t + 2
Else
t = t + 1
End If
If t >= strlen Then
strTemp = Left(str, i)
Exit For
End If
Next
If strTemp <> str Then
strTemp = strTemp & "…"
End If
gotTopic = Replace(Replace(Replace(Replace(strTemp, " ", " "), Chr(34), """), ">", ">"), "<", "&lt;")
End Function
%>
<%
str="一共11111w有汉字"
str1="一共有五汉字"
response.write "gotTopic
"
response.write gotTopic(str,10)&"
"&gotTopic(str1,10)&"
"
response.write "left
"
response.write Left(str,5)&"
"&Left(str1,5)
response.end
%>