document.all is no longer [Replaceable].

It has been possible for web developers to overwrite document.all for a long time, but according to the web standard, document.all will be no longer overwritable, i.e. it will be readonly. [before the change] document.all = 42; console.log(document.all); // prints 42 [after the change] document.all = 42; console.log(document.all); // prints a HTMLAllCollection

Specification

Established standard

Status in Chromium

Blink>Bindings


Enabled by default (tracking bug) in:

  • Chrome for desktop release 65
  • Chrome for Android release 65
  • Android WebView release 65
  • Opera release 65
  • Opera for Android release 65

Consensus & Standardization

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

  • Shipped
  • No public signals
  • In development
  • No signals

Owner

Last updated on 2017-12-20