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
).
WebAssembly.validate()
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
Browser compatibility
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
validate |
57
|
16
|
52
Disabled in the Firefox 52 Extended Support Release (ESR).
|
No
|
44
|
11
|
57
|
57
|
52
Disabled in the Firefox 52 Extended Support Release (ESR).
|
43
|
11
|
7.0
|
1.0
|
8.0.0
|
See also
© 2005–2022 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/validate