Example of using native Promise with deferred XMLHttpRequest

Promise+XMLHttpRequest.js

var console = {
    log: function(s) {
      document.getElementById("console").innerHTML += s + "<br/>"
    }
  }
  // Simple XMLHttpRequest
  // based on https://davidwalsh.name/xmlhttprequest
SimpleRequest = {
    call: function(what, response) {
      var request;
      if (window.XMLHttpRequest) { // Mozilla, Safari, ...
        request = new XMLHttpRequest();
      } else if (window.ActiveXObject) { // IE
        try {
          request = new ActiveXObject('Msxml2.XMLHTTP');
        } catch (e) {
          try {
            request = new ActiveXObject('Microsoft.XMLHTTP');
          } catch (e) {}
        }
      }
      // state changes
      request.onreadystatechange = function() {
        if (request.readyState === 4) { // done
          if (request.status === 200) { // complete	
            response(request.responseText)
          } else response();
        }
      }
      request.open('GET', what, true);
      request.send(null);
    }
  }
/**
       * Promise.All
       * @param items Array of objects
       * @param block Function block(item,index,resolve,reject)
       * @param done Function Success block
       * @param fail Function Failure block
       * @example

          promiseAll(["a","b","c"],
          function(item,index,resolve,reject) {
            MyApp.call(item,function(result) {
              resolve(result);
            },
            function( error ) { reject(error); }):
          },
          function(result) { // aggregated results

          },function(error) { // error

          })

        * @author Loreto Parisi (loretoparisi at gmail dot com)
       */
var promiseAll = function(items, block, done, fail) {
  var self = this;
  var promises = [],
    index = 0;
  items.forEach(function(item) {
    promises.push(function(item, i) {
      return new Promise(function(resolve, reject) {
        if (block) {
          block.apply(this, [item, index, resolve, reject]);
        }
      });
    }(item, ++index))
  });
  Promise.all(promises).then(function AcceptHandler(results) {
    if (done) done(results);
  }, function ErrorHandler(error) {
    if (fail) fail(error);
  });
}; //promiseAll

// LP: deferred execution block
var ExecutionBlock = function(item, index, resolve, reject) {
  SimpleRequest.call('http://icanhazip.com/', function(result) {
    if (result) {
      console.log("Response[" + index + "] " + result);
      resolve(result);
    } else {
      reject(new Error("call error"));
    }
  })
}

arr = [1, 2, 3]
promiseAll(arr, function(item, index, resolve, reject) {
  console.log("Resolving item[" + index + "]")
  ExecutionBlock(item, index, resolve, reject);
}, function(results) { // aggregated results
  console.log("All done of " + results.length);
  console.log(JSON.stringify(results));
}, function(error) { // error
  console.log(error);
});

Playground: https://fiddle.jshell.net/8qv6rxmr/