Promises loop

promises_loop.js

var Promise = require('bluebird');
var promises = [];
for(var i = 0 ; i<10; i++) { 
  var that = this;
  promises.push(new Promise(function(fulfill, reject) {
    setTimeout(function(){
      console.log('Fulfill ');
      fulfill();
    }, 1000+Math.random()*10000);
  }));
}
Promise.all(promises).then(function(){
  console.log('done');
});