SOURCE

console.log('script start');

setTimeout(function() {
  console.log('setTimeout');
}, 0);

Promise.resolve().then(function() {
  console.log('promise1');
  return 111;//Promise.resolve(111);
}).then(function(val) {
  console.log(val);
  console.log('promise1-2');
});
Promise.resolve().then(function() {
  setTimeout(function() {
  	console.log('promise2');}
  ,0);
}).then(function() {
  console.log('promise2-2');
});
console.log('script end');