promises-all.js

function asyncOperation() {
  // returns promise
}

var promises = [];
for (var i=0; i<=10; i++) {
  var promise = asyncOperation();
  promises.push(promise);
}

// now we need to execute some logic after all promises get resolved
// we can use .all() as following
q
  .all(promises)
  .then(function() {
    console.log('all promises resolved!');
  });