Certain blocking APIs spin up nested message loops. Invoking those APIs during microtask execution has undesirable effects, e.g., it is possible that events are dispatched during microtasks. Those APIs currently are alert, prompt, confirm, print, and send() on synchronous XHRs.

Documentation

Status in Chromium

Blink


Removed (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • Positive
  • No signal
  • No signals

Owner

Last updated on 2021-10-25