Multi-memory (WebAssembly)Limited availability
A single module in WebAssembly can have multiple memories.
Not yet supported in all major browsers — check the table and provide a fallback.
Browser support
DesktopChrome
1–119Not supported
120+Supportedsince Dec 5, 2023
Current: 155Edge
12–119Not supported
120+Supportedsince Dec 7, 2023
Current: 154Firefox
1–124Not supported
125+Supportedsince Apr 16, 2024
Current: 157Safari
✕Not supportedup to 27
Current: 27MobileChrome Android
18–119Not supported
120+Supportedsince Dec 5, 2023
Current: 155Firefox Android
4–124Not supported
125+Supportedsince Apr 16, 2024
Current: 157Safari iOS
✕Not supportedup to 27
Current: 27How to use
Not supported in Safari, Safari iOS. Use feature detection below and provide a fallback (or a polyfill) for those browsers.
Example
Full syntax and examples are on MDN: Memory.
Feature detection
There’s no simple runtime check for this feature; rely on the support table and test in your target browsers.