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Exception handling (WebAssembly)

Widely Available (since 2024-11-03)

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.

Browser support

  • Chrome 95 Released on 2021-10-19
  • Chrome Android 95 Released on 2021-10-19
  • Edge 95 Released on 2021-10-21
  • Firefox 100 Released on 2022-05-03
  • Firefox for Android 100 Released on 2022-05-03
  • Safari 15.2 Released on 2021-12-13
  • Safari on iOS 15.2 Released on 2021-12-13

MDN documentation

Specifications

Usage (according to Chrome Platform Status)

~0.607% of page loads. More data at chromestatus.com.

Web Platform Tests (WPT)

View the latest WPT test results for this feature

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