javascript - Different callback inside the loop -

i have problem iterating in array inside callbacks. it's specific problem.

i have loop:

arr.foreach(function(value, index, array){}); 

inside loop call asynchronous function:

arr.foreach(function(value, index, array) {    asfun1(function(i, val){ return function (param1, param2)    {          };}(index, value)); }); 

after callback fired, need set new callback object , call asynchronous function:

arr.foreach(function(value, index, array) {    asfun1(function(i, val){ return function (param1, param2)    {          obj.callback = (function(in, v){ return function (param3, param4)       {            //make       };}(i, val))          obj.asfun2();     };}(index, value)); }); 

so, solve problem implemented in obj class callback array , iterator. , in loop i'm not setting callback, adding in array. , when first callback fires, command obj iterator go next callback:

arr.foreach(function(value, index, array) {    asfun1(function(i, val){ return function (param1, param2)    {          obj.callback.addcallback(function(in, v){ return function (param3, param4)       {          obj.nextcallback();          //make       };}(i, val))          obj.asfun2();     };}(index, value)); }); 

but when test it, value , index last in array. i've tried lot of ways solve it, doesn't work.