<p>　　判断远程图片是否存在[ASP代码]</p><p><code>function CheckURL(byval A_strUrl)<br />set XMLHTTP = Server.CreateObject("Microsoft.XMLHTTP")<br />XMLHTTP.open "HEAD",A_strUrl,false<br />XMLHTTP.send()<br />CheckURL=(XMLHTTP.status=200)<br />set XMLHTTP = nothing<br />end function<br />Dim imgurl<br />imgurl="UploadFiles/2007829144940734.gif"<br />if CheckURL(imgurl) then<br />response.write "图片存在"<br />else<br />response.write "图片不存在"<br />end if</code></p><p>　　判断远程图片是否存在[js代码]</p><p><code>{<br />var oReq = new ActiveXObject("Microsoft.XMLHTTP")<br />oReq.open("Get","UploadFiles/2007829144941621.gif",false);<br />oReq.send();<br />//alert(oReq.status)<br />if(oReq.status==404)<br />alert('不存在');<br />else<br />alert("存在")<br />}</code></p>