html读出文本文件内容_javascript技巧

<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
</script>
<script language="JavaScript">
var xmlUrl = new ActiveXObject('Microsoft.XMLHTTP');
xmlUrl.Open('GET','1.txt');
xmlUrl.Send();
setTimeout('alert(bytes2BSTR(xmlUrl.ResponseBody))',2000);
</script>