Differences between Map and Object

OHIOLee answered on July 7, 2022 Popularity 10/10 Helpfulness 3/10

answer Differences between Map and Object

Differences between Map and Object

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Key types: A Map's key can be of any data type, but an Object's key can only be a String or a Symbol.

Accidental keys: A Map has no default keys and can only contain the keys you explicitly put into it,
but an Object prototype has default keys that could clash with your keys.

Size: You can quickly get the number of items in a Map using its size property,
but you have to count manually in an Object.

Performance: It is much easier to remove or add key: value pairs in a Map than in an Object.

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