javascript - anatomy of GDownloadUrl -

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i using gdownloadurl send client data server.here sode used

gdownloadurl(         dwnld_url,         function(data) {             if(!empty(data)){                  // parsing xml                 var xml_doc = gxml.parse(data);              } else {                  alert ('could not genarate attractions. please try again!');             }         },         tmp_xml_doc );

can please explain me function(data) means.i read documentation.but confused.can suggest me tutrial because new web programming.thanks in advance

the function(data) {...} anonymous function. function called when response of dnwnld_url returned. function called response data , handle data in body of anonymous function. parse xml can xml result.

hope made sense you.

cheers!


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