jquery - Problems processing an XML file -

i'm using jquery retrieve xml file. xml file dynamically generated (php) based upon parameters passed jquery. example, request information on 3 ids (in example: 0zjb001, 5yh043, 9tq987). returned xml file contains list of requested ids , found items. i'm changing span contents depending upon these values. i've got working fine, except when less items returned requested. so, if 3 items requested , 2 returned, jquery each statement executed twice. instead, need execute each itemid , retrieve details corresponding asin item, or otherwise update default details.

sample xml file format (not exact, it's simplified):

<itemlookupresponse>     <items>         <request>             <itemlookuprequest>                 <itemid>0zjb001</itemid>                 <itemid>5yh043</itemid>                 <itemid>9tq987</itemid>                 <variationpage>all</variationpage>             </itemlookuprequest>         </request>         <item>             <asin>0zjb001</asin>             <offersummary>                 <totalnew>0</totalnew>                 <totalused>0</totalused>                 <totalcollectible>0</totalcollectible>                 <totalrefurbished>0</totalrefurbished>             </offersummary>         </item>         <item>             <asin>9tq987</asin>             <offersummary>                 <lowestnewprice>                     <amount>1000</amount>                     <currencycode>usd</currencycode>                     <formattedprice>$10.00</formattedprice>                 </lowestnewprice>                 <totalnew>1</totalnew>                 <totalused>0</totalused>                 <totalcollectible>0</totalcollectible>                 <totalrefurbished>0</totalrefurbished>             </offersummary>         </item>     </items> </itemlookupresponse> 

so end result (in "pseudo code"):

foreach(items) {     if(exists itemid && asin) {         //update span price     } else {         //update span default text     } } 

try

function callback(xml){     var itemids = xml.find('request itemlookuprequest itemid');     var items = xml.find('items > item');      itemids.each(function(idx, itemid){         var item = items.filter(function(idx, item){             return $(item).children('asin').text() == itemid;         });          if(item.length){             //update span item.find('formattedprice').text()         } else {             //update span default price         }     }) }