gistfile1.txt

var p1 = new Promise((resolve, reject) => { 
  setTimeout(resolve, 2000, "long_execution"); 
}); 

var p2 = new Promise((resolve, reject) => { 
  setTimeout(resolve, 500, "ok"); 
}); 

var p3 = new Promise((resolve, reject) => {
  setTimeout(reject, 1000, "reject");
});

Promise.race([p1, p3]).then(values => { 
  console.log(values);
}, reason => {
  console.log(reason)
});

Promise.race([p2, p3]).then(values => { 
  console.log(values);
}, reason => {
  console.log(reason)
});