xml--小结④DTD的验证问题，不要用IE检验，IE不靠谱

<script type="text/javascript">
var xmldoc = new ActiveXObject("Microsoft.XMLDOM");
xmldoc.validateOnParse="true";
xmldoc.load("instance1.xml");//修改这个就可以了
var reson = xmldoc.parseError.reason;
var line = xmldoc.parseError.line;
document.write(reson+"<br/>");
document.write(line);
</script>