create custom two level object using arrays - Javascript -

i have create custom object using 2 arrays contains objects 2 3 properties. based on number of matched items have create object. here don't want use many variables. without using intermediate variables want write code

code

var fn = function() {   var list1 = [{aid: 0, name: 'item1'},              {aid: 1, name: 'item2'},              {aid: 2, name: 'item3'}],     list2 = [ { id: 0, label: 'one', actions: [ 0, 1, 2 ] },               { id: 1, label: 'two', actions: [ 0, 2 ] } ],     customobj ={};     for(var i=0; i<list1.length; i++) {         for(var j=0; j<list2.length; j++){              customobj[list2[j].id] = {};              for(var k=0; k<list2[j].actions.length; k++){                  if(list1[i].aid == list2[j].actions[k]){                      customobj[list2[j].id][list1[i].name] = true                   }              }         }     }    return customobj; } 

required output:

customobj = {    0: {       item1: true,       item2: true,       item3: true    },    1: {      item1:true,      item3:true    } } 

can suggest me doing mistake?

you're assigning value entire object instead of 1 property. inside condition, need customobj[list2[j].id][list1[i].name] = true. using brackets access properties (as opposed dots, in customobj.0.item1) here lets assign properties variable names. so, final code like:

var fn = function() {   var list1 = [{aid: 0, name: 'item1'},              {aid: 1, name: 'item2'},              {aid: 2, name: 'item3'}],     list2 = [ { id: 0, label: 'one', actions: [ 0, 1, 2 ] },               { id: 1, label: 'two', actions: [ 0, 2 ] } ],     customobj ={};     for(var i=0; i<list1.length; i++) {         for(var j=0; j<list2.length; j++){             for(var k=0; k<list2.actions.length; k++){                 if(list1[i].aid == list2[j].actions[k]){                     customobj[list2[j].id][list1[i].name] = true;                 }             }         }     }     return customobj; }