Get first fulfilled promise

Question

If I have two promises A and B, only one of which will succeed, how can I get whichever one fulfills successfully? I\'m looking for something similar to Promise.race

Answer 1

 //example 1
    var promise_A = new Promise(function(resolve, reject) {
        // выполнить что-то, возможно, асинхронно…
        setTimeout(function(){

            return  resolve(10);
            //return reject(new Error('ошибка'))
        },10000)
    });

    var promise_B = new Promise(function(resolve, reject) {
        // выполнить что-то, возможно, асинхронно…

        setTimeout(function(){
            return  resolve(100);
        },2000)
    });


/*
 //[100,10]
 Promise.all([
  promise_A,promise_B
 ]).then(function(results){
  console.log(results)
 });
*/

 //100
 Promise.race([
  promise_A,promise_B
 ]).then(function(results){
  console.log(results)
 });