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xmlHttp.responseXML为null

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Release: 2016-06-23 13:54:01
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你ajax里定的什么格式??

nbsp;html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">



无标题文档



    header("Content-type:text/html;charset='GBK'");
$id=$_GET["key"];
    $link=mysql_connect("localhost","root","");
mysql_select_db("enterprise");
mysql_query("set names 'GBK'");
$sql="select * from etp_news where id=".$id;
$result=mysql_query($sql);
while($rs = mysql_fetch_object($result)){

$tit=$rs->tit;
$cont=$rs->content;
$name=$rs->source;
?>
     


    
        
            
            
             
        
标题 " />
正文
作者 " />
" />
             

    

   
   
   <script> <br /> var xmlHttp; <br /> function createXMLHttpRequest(){ <br /> if(window.ActiveXObject){ <br /> xmlHttp=new ActiveXObject("Microsoft.XMLHTTP"); <br /> }else if(window.XMLHttpRequest){ <br /> xmlHttp=new XMLHttpRequest(); <br /> } <br /> <br /> } <br /> <br /> <br /> function upd(){ <br /> createXMLHttpRequest(); <br /> <br /> var id=document.getElementById("id").value; <br /> var title=document.getElementById("title").value; <br /> var name=document.getElementById("name").value; <br /> var cent=document.getElementById("cent").value; <br /> var str="id="+id+"&title="+title+"&name="+name+"&cent="+cent; <br /> var url="php/update.php"; <br /> xmlHttp.open("POST",url,true); <br /> xmlHttp.onreadystatechange=callback; <br /> xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded"); <br /> xmlHttp.send(str); <br /> <br /> } <br /> <br /> <br /> function callback(){ <br /> if(xmlHttp.readyState==4){ <br /> if(xmlHttp.status==200){ <br /> var strs=xmlHttp.responseText; <br /> <br /> if(strs=="1"){ <br /> alert("数据已修改"); <br /> } <br /> } <br /> } <br /> } <br /> </script>

你怎么只看返回内容的后半部呢?前半部是 php 的错误信息,为什么视而不见呢?
两部分合在一起还能算是 XML 吗?




求指教

错误信息明确的告诉你 sel_News.php 第 18 行处变量 $content 不存在
你不按错误信息改错,光抱拳有什么用?



不加$ctent.  只显示一条
加了就出错,找不到ctent,我需要让他循环显示啊

感谢 版主提醒  问题ok了

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