检测某一文件是否有效.asp

来自「较为详细的介绍了asp自定义的各种函数,方便asp的各种开发.」· ASP 代码 · 共 34 行

ASP
34
字号
<html>
<head>
</head>
<script language="vbscript">
function bytes2BSTR(vIn) 
strReturn = "" 
For i = 1 To LenB(vIn) 
ThisCharCode = AscB(MidB(vIn,i,1)) 
If ThisCharCode < &H80 Then 
strReturn = strReturn & Chr(ThisCharCode) 
Else 
NextCharCode = AscB(MidB(vIn,i+1,1)) 
strReturn = strReturn & Chr (CLng(ThisCharCode) * &H100 + CInt(NextCharCode)) 
i = i + 1 
End If 
Next 
bytes2BSTR = strReturn 
End function

function CheckUrl(url)
set oSend=createobject("Microsoft.XMLHTTP") 
SourceCode = oSend.open ("GET",url,false) 
oSend.send() 
if instr(bytes2BSTR(oSend.responseBody),"Not Found")<>0 then
msgbox "此文件不存在"
else
msgbox "此文件存在"
end if
End function
</script>

<input name="myurl" id="myurl" type="textfield" value="">
<input type="button" onclick="CheckUrl(myurl.value)" value="检 测">
</html>

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