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Symbol.hasInstance (ES6)

Category

JavaScript

Type

New or changed feature

Status

In developer trial (Behind a flag) (Chrome 50)

Intent stage

None

Summary

Symbol.hasInstance enables customizing the behavior of the 'instanceof' operator.

Standards & signals

• Specification: https://tc39.github.io/ecma262/#sec-symbol.hasinstance
• Firefox: No signal
• Safari: In development
• Web developers: No signals
• Tracking bug: https://bugs.chromium.org/p/v8/issues/detail?id=4447

View on chromestatus.com