jquery global variables usable everywhere -

i starting doubt jquery easy use , flexible. have this:

var prodata=[]; var request = $.get("prodb.txt", function(data) {     var lines=data.split(/\n/);     var numberofmodels=lines.length-2;     //var prodata=[];     var i;     prodata.push(0);     var fieldnames=lines[0].split(/\t/);     (i = 1; < lines.length-1; ++i) {         var fields=lines[i].split(/\t/);         prodata.push(i);                     var j;         prodata[i]={};         (j = 0; j < fields.length; ++j) {             //prodata[i][fieldnames[j]]=fields[j];             var str=fieldnames[j];             prodata[i][str]=fields[j];          }     }      //fill dropdown list     var options = '';     (i = 1; < lines.length-1; ++i) {         if (prodata[i]['name'].indexof("elly") >= 0) {             var iselected = i;         }         options += '<option label="bla" value="' + prodata[i]['id'] + '">' + prodata[i]['name']+', '+prodata[i]['brand']+', '+prodata[i]['model']+'</option>';     }     $("#userchosenpromodel").html(options);     //select default option     $('#userchosenpromodel option[value="' + prodata[iselected]['id'] + '"]').attr("selected", "selected"); }, 'text'); //$.get 

i use proid, lower in code, after it's been defined that:

//submit form $('#submitbutton').click(function(e) {     e.preventdefault();      request.done(function(){         proid=$('#userchosenpromodel option[selected="selected"]').val();         proid=parseint(proid);         computeuserdimensions(prodata[proid]);     }); });     console.log(proid); 

how to?

same problem prodata...i have request.done can't rid of

thanks

you don't have problem jquery asynchronous/event based logic.

you can't synchronously use return of asynchronous function. must use result in callback or in function call callback :

request.done(function(){     var proid=$('#userchosenpromodel option[selected="selected"]').val();     console.log(proid); });