promise-memo2.js

var count = 0;


function hoge() {
  return new Promise(function(resolve, reject) {
    setTimeout(function() {
      if (count < 2) {
        resolve(count);
        console.log((new Date()).getTime());
      } else {
        reject('fuga');
      }
      count++;
    }, 1000);
  });
}


Promise.all([
  hoge(),
  hoge(),
  hoge()
]).then(function(results) {
  console.log('success', results);
}).catch(function(error) {
  console.log('fail', error);
});