How to store a complete xml in variable in javascript or is there any way to get data from xml

How to store a complete xml in variable in javascript or is there any way to get data from xml.

var strXML = '<variable type="NameValuePair[]"> <item type="NameValuePair"><name type="String"><![CDATA[No Data Found]]></name>';

     document.write(strXML);

When I do this I get nothing. Can someone help me. Thank you