coderef

Promise.allSettled()Baseline · Widely available

The Promise.allSettled() static method waits for an array of promises to settle (resolve or reject).

Supported in all major browsers for at least 30 months — safe to use without fallbacks. Baseline since Jul 28, 2020. Widely available since Jan 28, 2023.

How to use ↓Compare browsers

Browser support

DesktopChrome
1–75Not supported
76+Supportedsince Jul 30, 2019
Current: 155
Edge
12–18Not supported
79+Supportedsince Jan 15, 2020
Current: 154
Firefox
1–70Not supported
71+Supportedsince Dec 10, 2019
Current: 157
Safari
1–12.1Not supported
13+Supportedsince Sep 19, 2019
Current: 27
MobileChrome Android
18–75Not supported
76+Supportedsince Jul 30, 2019
Current: 155
Firefox Android
4–68Not supported
79+Supportedsince Jul 28, 2020
Current: 157
Safari iOS
1–12.2Not supported
13+Supportedsince Sep 19, 2019
Current: 27

How to use

This feature is Baseline widely available — use it freely, no fallback needed.

Example

Full syntax and examples are on MDN: allSettled.

Feature detection

JS · check before using
if ("allSettled" in Promise || ("prototype" in Promise && "allSettled" in Promise.prototype)) {
  // Promise.allSettled is available
}

Documentation (MDN)

Specification