Multi-value (WebAssembly)Baseline · Widely available
Instructions and blocks can produce multiple result values.
Supported in all major browsers for at least 30 months — safe to use without fallbacks. Baseline since Oct 20, 2020. Widely available since Apr 20, 2023.
Browser support
DesktopChrome
1–85Not supported
86+Supportedsince Oct 20, 2020
Current: 155Edge
12–85Not supported
86+Supportedsince Oct 9, 2020
Current: 154Firefox
1–77Not supported
78+Supportedsince Jun 30, 2020
Current: 157Safari
1–13Not supported
13.1+Supportedsince Mar 24, 2020
Current: 27MobileChrome Android
18–85Not supported
86+Supportedsince Oct 20, 2020
Current: 155Firefox Android
4–68Not supported
79+Supportedsince Jul 28, 2020
Current: 157Safari iOS
1–13Not supported
13.4+Supportedsince Mar 24, 2020
Current: 27How to use
This feature is Baseline widely available — use it freely, no fallback needed.
Example
Full syntax and examples are on MDN — see the links below.
Feature detection
There’s no simple runtime check for this feature; rely on the support table and test in your target browsers.