Javascript Object vs Map vs WeakMap #shorts #javascript

Object: An object is a collection of key-value pairs. Keys are always strings.

MAP: A map is a collection of keyed data items, just like an Object. But the main difference is that Map allows keys of any type.

WEAKMAP: WeakMap is just like Map with the key difference that keys must be objects and the objects are weakly referenced. That means if there is no other reference to the object, it will be garbage collected.

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