js处理XML

<?xml version="1.0" standalone="yes"?>
<DATAPACKET Version="2.0">
<METADATA>
   <FIELDS>
      <FIELD attrname="brlb" fieldtype="string" WIDTH="2"/>
      <FIELD attrname="patid" fieldtype="string" WIDTH="12"/>
      <FIELD attrname="curno" fieldtype="string" WIDTH="20"/>
      <FIELD attrname="zxksdm" fieldtype="string" WIDTH="4"/>
      <FIELD attrname="zxysdm" fieldtype="string" WIDTH="4"/>
      <FIELD attrname="xmdm" fieldtype="string" WIDTH="20"/>
      <FIELD attrname="xmdj" fieldtype="string" WIDTH="12"/>
      <FIELD attrname="xmsl" fieldtype="string" WIDTH="12"/>
      <FIELD attrname="xmlb" fieldtype="string" WIDTH="2"/>
      <FIELD attrname="qqksdm" fieldtype="string" WIDTH="4"/>
      <FIELD attrname="qqysdm" fieldtype="string" WIDTH="4"/>
      <FIELD attrname="sqdxh" fieldtype="string" WIDTH="12"/>
   </FIELDS>
   <PARAMS CHANGE_LOG="1 0 4"/>
</METADATA>
<ROWDATA>
   <ROW RowState="4" brlb="1" patid="9988" curno="123123123" zxksdm="0029" zxysdm="4013" xmdm="100001101-10" xmdj="123.5" xmsl="12" qqksdm="3021" qqysdm="2012" sqdxh="7858"/>
</ROWDATA>
</DATAPACKET>取出<ROW RowState="4" brlb="1" patid="9988" curno="123123123" zxksdm="0029" zxysdm="4013" xmdm="100001101-10" xmdj="123.5" xmsl="12" qqksdm="3021" qqysdm="2012" sqdxh="7858"/>
里面所有属性的值