🏠 New in Low Baseline Support: WeakMap
July 29, 2015
A WeakMap object holds key-value pairs that do not create strong references to its keys, such that value data can be associated with a key without preventing garbage collection of the key.
Source features
javascript.builtins.WeakMap[mdn]javascript.builtins.WeakMap.WeakMap[mdn]javascript.builtins.WeakMap.delete[mdn]javascript.builtins.WeakMap.get[mdn]javascript.builtins.WeakMap.has[mdn]javascript.builtins.WeakMap.set[mdn]javascript.builtins.WeakMap.WeakMap.null_allowed[mdn]javascript.builtins.WeakMap.WeakMap.iterable_allowed[mdn]javascript.builtins.WeakMap.symbol_as_keys[mdn]