Sloppy mode block bindings (let, class, const, function) (ES6)

Enable ES6-style block-scoped bindings including let and class in sloppy mode, and modify semantics of const and function to operate according to ES6 in sloppy mode.



Established standard

Status in Chromium

Enabled by default in:

  • Chrome for desktop release 49
  • Chrome for Android release 49
  • Opera release 36
  • Opera for Android release 36

Consensus & Standardization

  • Shipped
  • Shipped
  • In development
  • Strongly positive


Last updated on 2016-03-14