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代码编辑器：

<html>
<meta charset="utf-8">
<link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/>
<script>
function loadXMLDocErr(dname) 
{
try //Internet Explorer
  {
  xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
  xmlDoc.async=false;
  xmlDoc.load(dname);

if (xmlDoc.parseError.errorCode != 0) 
    {
    alert("Error in line " + xmlDoc.parseError.line + " position " + xmlDoc.parseError.linePos + "\nError Code: " + xmlDoc.parseError.errorCode + "\nError Reason: " + xmlDoc.parseError.reason + "Error Line: " + xmlDoc.parseError.srcText);
    return(null);
    }
  }
catch(e)
  {
  try //Firefox
    {
    xmlDoc=document.implementation.createDocument("","",null);
    xmlDoc.async=false;
    xmlDoc.load(dname);
    if (xmlDoc.documentElement.nodeName=="parsererror")
      {
      alert(xmlDoc.documentElement.childNodes[0].nodeValue);
      return(null);
      }
    }
  catch(e) {alert(e.message)}
  }
try 
  {
  return(xmlDoc);
  }
catch(e) {alert(e.message)}
return(null);
}

xmlDoc=loadXMLDocErr("note_error.xml");
</script>

代码编辑器：

运行结果：