js读取xml的有关问题

js读取xml的问题
<BlogInfo   bpId= "斧头帮 "   blogId= "73 "   templateId= "1 "   visitNum= "44 "   bpNum= "85 "> <faceUrl> </faceUrl>  
怎么得到   js   怎么得到   visitNum


------解决方案--------------------
试试
<script>
var xmlDoc=new ActiveXObject( "Microsoft.XMLDOM ");
xmlDoc.async = false
xmlDoc.load( "BlogInfo.xml ");
var visitNum= xmlDoc.getElementsByTagName( 'BlogInfo ')[0].getAttribute( "visitNum ");
alert(visitNum);
</script>