Exception handling (WebAssembly)

Exceptions break the normal control flow of execution to represent exceptional behavior, such as an error. You can respond to the exception in JavaScript code.

Baseline Status: Achieved Widely Available on Nov 3, 2024 (Cross-browser Newly Available since May 3, 2022).

Desktop Browser Engine Support

Google Chrome

95

Supported

Mozilla Firefox

100

Supported

Apple Safari

15.2

Supported

Microsoft Edge

95

Supported

Mobile Browser Engine Support

Chrome Android

95

Firefox Android

100

Safari iOS

15.2

Specifications and References

Specification ↗ Feature XML ↗

MDN Browser Compat Data Keys:

webassembly.api.Exception ↗ webassembly.api.Exception.Exception ↗ webassembly.api.Exception.Exception.options_parameter_traceStack ↗ webassembly.api.Exception.getArg ↗ webassembly.api.Exception.is ↗ webassembly.api.Exception.stack ↗ webassembly.api.Tag ↗ webassembly.api.Tag.Tag ↗ webassembly.api.Tag.type ↗ webassembly.exception-handling ↗