Passing variable to promise in a loop

Question

I have a promise in a loop, and I don\'t know how to pass some scope variables into the promise handler.

for(var i in superarray){
    MyService.get(superarray[i         


        

Answer 1

By the time your callback is run, i will refer to the last element in your array. You can use a closure and capture the current value of i:

for (var i in superarray){
    (function(j) {
        MyService.get(superarray[j].externalID).then(function(r) {
            console.debug(j);
        });
    })(i);
}