Callback after all asynchronous forEach callbacks are completed

Question

As the title suggests. How do I do this?

I want to call whenAllDone() after the forEach-loop has gone through each element and done some asynchronous p

Answer 1

Hope this will fix your problem, i usually work with this when i need to execute forEach with asynchronous tasks inside.

foo = [a,b,c,d];
waiting = foo.length;
foo.forEach(function(entry){
      doAsynchronousFunction(entry,finish) //call finish after each entry
}
function finish(){
      waiting--;
      if (waiting==0) {
          //do your Job intended to be done after forEach is completed
      } 
}

with

function doAsynchronousFunction(entry,callback){
       //asynchronousjob with entry
       callback();
}