jQuery parse xml and keep order

I have an xml with mixed node content, I want to parse the xml and extract information based on the order that they appear in.

For example :

<booklist>
  <hardcover>
   <title>some title </title>
  </hardcover>
  <paperback>
   <title>some title </title>
  </paperback>
  <paperback>
   <title>some title </title>
  </paperback>
  <hardcover>
   <title>some title </title>
  </hardcover>
  <paperback>
   <title>some title </title>
  </paperback>
  <paperback>
   <title>some title </title>
  </paperback>
  <hardcover>
   <title>some title </title>
  </hardcover>
</booklist>

---

I initially extracted each type using $.find() then concatenated the list back together, but the order is lost.

   jQuery(xml).find('hardcover').each(function(){
...
     hardcoverlist.push(hardcoverobj);

..});


   jQuery(xml).find('paperback').each(function(){
    paperbacklist.push(paperbackobj);
..});

Is there a way to tell find() to look for either/or ? like so jQuery(xml).find('paperback || hardcover')