What is `Map` in JavaScript and how does it differ from a plain object?

JavaScript Developer Easy

JavaScript Developer — Easy

What is `Map` in JavaScript and how does it differ from a plain object?

Key points

  • Maps allow any value as keys, while objects use string/Symbol keys only
  • Maps maintain insertion order and have a size property
  • Plain objects do not have a built-in size property
  • Maps can store any type of value, including objects

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