Symbol.toStringTag (ES6)

Using Symbol.toStringTag, user-defined types can return customized output when passed to Object.prototype.toString (either directly or as a result of string coercion) by storing a descriptive string in a Symbol.toStringTag-keyed property.

Specification

Established standard

Status in Chromium

Blink components: Blink

Enabled by default (launch bug) in:

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

Consensus & Standardization

• Firefox: In development
• Edge: No public signals
• Safari: In development
• Web Developers: No signals

Owners

• adamk@chromium.org
• caitpotter88@gmail.com

Last updated on 2017-06-14