Map
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What is Map?
A Map is a keyed collection that stores key-value pairs and remembers insertion order. Unlike plain objects, Map keys can be of any type, including objects and functions. Maps are preferred over plain objects when keys are dynamic or when the order of entries matters.
Free resources to learn Map
- ArticleMap - Keyed Collections
- ArticleMap Data Type
More in stage 4: Type Casting
Map: common questions
Can I learn Map in Hindi?
This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Map in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.
Is this Map tutorial for beginners?
It is lesson 33 of 124 in the free JavaScript roadmap, in stage 4, Type Casting. If you are new to JavaScript, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.