| ASP判断远程图片是否存在的代码：
function CheckURL(byval A_strUrl)
set XMLHTTP = Server.CreateObject("Microsoft.XMLHTTP")
XMLHTTP.open "HEAD",A_strUrl,false
XMLHTTP.send()
CheckURL=(XMLHTTP.status=200)
set XMLHTTP = nothing
end function
Dim imgurl
imgurl="img/weste_net.gif"
if CheckURL(imgurl) then
response.write "图片存在"
else
response.write "图片不存在"
end if
还有用JavaScript来判断远程图片是否存在的代码：
var oReq = new ActiveXObject("Microsoft.XMLHTTP")
oReq.open("Get","img/weste_net.gif",false);
oReq.send();
if(oReq.status==404)
alert('不存在');
else
alert("存在")
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