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JavaScript: Difference between revisions
→Data Structures
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===Set=== | ===Set=== | ||
===WeakMap=== | |||
Unlike map, weakmap holds weak references to its keys. This allows keys to be garbage collected when no reference to it remains. | |||
Note that once keys are garbage collected, they are also removed from the weakmap since you can no longer access them. | |||
You can not iterate through a weakmap. | |||
==Modules== | ==Modules== | ||