Testint ES7 async/await

async.await.js

function p1() {
  return new Promise(function(resolve, reject){
    setTimeout(function() {
      resolve('p1');
    }, 300);
  });
}

function p2() {
  return new Promise(function(resolve, reject){
    setTimeout(function() {
      resolve('p2');
    }, 200);
  });
}

function p3() {
  return new Promise(function(resolve, reject){
    setTimeout(function() {
      resolve('p3');
    }, 500);
  });
}

async function getVal() {
  var val1 = await p1();
  var val2 = await p2();
  var val3 = await p3();
  return val1 + val2 + val3 ;
}

(async function() {
  var bla = await getVal();
  console.log(bla); 
}());