← Back to release summary

WeakMap (ES6)

Category

JavaScript

Type

New or changed feature

Status

Enabled by default (Chrome 36)

Intent stage

None

Summary

WeakMaps are key/value maps in which keys are objects.

Standards & signals

• Specification: http://www.ecma-international.org/ecma-262/6.0/#sec-weakmap-objects
• Firefox: Shipped/Shipping
• Safari: Shipped/Shipping
• Web developers: Strongly positive
• Tracking bug: http://crbug.com/97642

Docs: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap

View on chromestatus.com