The buffer
prototype property of the Memory
object returns the buffer contained in the memory.
memory.buffer
Examples
The following example (see memory.html on GitHub, and view it live also) fetches and instantiates the loaded memory.wasm byte code using our fetchAndInstantiate()
utility function, while importing the memory created in the line above. It then stores some values in that memory, then exports a function and uses it to sum some values.
fetchAndInstantiate('memory.wasm', { js: { mem: memory } }).then(instance => { var i32 = new Uint32Array(memory.buffer); for (var i = 0; i < 10; i++) { i32[i] = i; } var sum = instance.exports.accumulate(0, 10); console.log(sum); });
Specifications
Specification | Status | Comment |
---|---|---|
WebAssembly JavaScript API The definition of 'buffer' in that specification. |
Draft | Initial draft definition. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 57 | 16 | 522 | No | 44 | 11 |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | 57 | 57 | Yes1 | 522 | No | ? | 11 |
1. This feature is behind the Experimental JavaScript Features
preference.
2. Disabled in the Firefox 52 Extended Support Release (ESR).
See also
Document Tags and Contributors
Tags:
Contributors to this page:
chrisdavidmills,
fscholz
Last updated by:
chrisdavidmills,