Promise Race Example 1

promiseRace

let peserta1 = new Promise(resolve => setTimeout(resolve, 30, 'Peserta 1.'))
let peserta2 = new Promise(resolve => setTimeout(resolve, 20, 'Peserta 2.'))
let peserta3 = new Promise(resolve => setTimeout(resolve, 50, 'Peserta 3.'))
let peserta4 = new Promise(resolve => setTimeout(resolve, 100, 'Peserta 4.'))
let peserta5 = new Promise(resolve => setTimeout(resolve, 90, 'Peserta 5.'))
 
Promise.race([peserta1, peserta2, peserta3, peserta4, peserta5])
    .then(val => console.log('Balapan selesai,Pemenangnya adalah:', val))
    .catch(err => console.log('Balapan dihentikan karena : ', err));