How we built it

Unscopables (ES6)

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

Enabled by default (launch bug) in:

  • Chrome for desktop release 38
  • Chrome for Android release 38
  • Opera release 25
  • Opera for Android release 25

Consensus & Standardization

Owner

Last updated on 2015-12-28