Unscopables allows properties to be hidden to with statement lookup rules. This is important for adding new properties to existing objects both in JavaScript and in DOM.

Specification

Established standard

Status in Chromium

Blink


Enabled by default (tracking bug) in:

  • Chrome for desktop release 38
  • Chrome for Android release 38

Consensus & Standardization

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

Owner

Last updated on 2020-12-11