withResolvers()
Tavsif
Promise.withResolvers() — Promise’larni yaratish va boshqarishni soddalashtiradigan statik metod.
Promise.withResolvers() Promise bilan bog‘liq resolve va reject funksiyalariga uning executor funksiyasidan tashqarida murojaat qilishning qulayroq usulini taqdim etadi.
Misol
const { promise, resolve, reject } = Promise.withResolvers();
// You can now use 'resolve' and 'reject' anywhere in your code
// to control the state of 'promise'.
// Simulate async work
setTimeout(() => {
const success = Math.random() > 0.5;
if (success) {
resolve("Operation successful!");
} else {
reject("Operation failed!");
}
}, 1000);
promise
.then((message) => text = message))
.catch((error) => text = error);
An’anaviy new Promise((resolve, reject) => { ... }) konstruktor andozasi o‘rniga Promise.withResolvers() quyidagilarni o‘z ichiga olgan obyektni qaytaradi:
- promise: Yangi yaratilgan Promise nusxasi
- resolve: Promise’ni qiymat bilan bajarilgan holatga o‘tkazuvchi funksiya
- reject: Promise’ni sabab (xato) bilan rad etuvchi funksiya
Sintaksis
Promise.withResolvers()
Parametrlar
| YO‘Q |
Qaytariladigan qiymat
| Tip | Tavsif |
| Object | 3 ta xususiyatni o‘z ichiga olgan obyekt: 1. Promise obyekti. 2. Promise’ni hal qiluvchi (resolve) funksiya. 3. Promise’ni rad etuvchi (reject) funksiya. |
Promise metodlari
Statik metodlar
Promise.all()
Promise.allSettled()
Promise.any()
Promise.race()
Promise.reject()
Promise.resolve()
Promise.try()
Promise.withResolvers()
Shuningdek qarang:
Brauzerlarda qo‘llab-quvvatlash
Promise.withResolvers() — JavaScript 2024 imkoniyati.
ES 2024 2024-yil martidan beri barcha zamonaviy brauzerlarda qo‘llab-quvvatlanadi:
| Chrome 117 |
Edge 117 |
Firefox 119 |
Safari 17.4 |
Opera 103 |
| 2023-yil sentabr | 2023-yil sentabr | 2023-yil oktabr | 2024-yil oktabr | 2023-yil may |
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