The WebAssembly.validate()
function validates a given typed array of WebAssembly binary code, returning whether the bytes form a valid wasm module (true
) or not (false
).
Syntax
WebAssembly.validate(bufferSource);
Parameters
bufferSource
- A typed array or ArrayBuffer containing WebAssembly binary code to be validated.
Return value
A boolean that specifies whether bufferSource
is valid wasm code (true
) or not (false
).
Exceptions
If bufferSource
is not a typed array or ArrayBuffer, a TypeError
is thrown.
Examples
Using validate
The following example (see the validate.html source code, and see it live too) fetches a .wasm module and converts it into a typed array. The validate()
method is then used to check whether the module is valid.
fetch('simple.wasm').then(response => response.arrayBuffer() ).then(function(bytes) { var valid = WebAssembly.validate(bytes); console.log("The given bytes are " + (valid ? "" : "not ") + "a valid wasm module"); });
Specifications
Specification |
---|
WebAssembly JavaScript Interface The definition of 'validate()' in that specification. |
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.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
validate | Chrome Full support 57 | Edge Full support 16 | Firefox
Full support
52
| IE No support No | Opera Full support 44 | Safari Full support 11 | WebView Android Full support 57 | Chrome Android Full support 57 | Firefox Android
Full support
52
| Opera Android Full support 43 | Safari iOS Full support 11 | Samsung Internet Android Full support 7.0 | nodejs Full support 8.0.0 |
Legend
- Full support
- Full support
- No support
- No support
- See implementation notes.
- See implementation notes.