怎样判断远程图片是否存在_ASP教程

判断远程图片是否存在的asp技巧[ASP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=UploadFiles/2007829144940734.gif

if CheckURL(imgurl) then

response.write 图片存在

else

response.write 图片不存在

end if

判断远程图片是否存在[js代码]

{

var oReq = new ActiveXObject(Microsoft.XMLHTTP)

oReq.open(Get,UploadFiles/2007829144941621.gif,false);

oReq.send();

//alert(oReq.status)

if(oReq.status==404)

alert('不存在');

else

alert(存在)

}