Weak Map
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What is Weak Map?
A WeakMap is a collection of key-value pairs where the keys must be objects and are held weakly. If the key object is garbage collected, the entry is automatically removed from the WeakMap. It is used for storing private data associated with objects without preventing garbage collection.
Free resources to learn Weak Map
- ArticleWeakMap
- ArticleWeakMap and WeakSet
More in stage 4: Type Casting
Weak Map: common questions
Can I learn Weak 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 Weak 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 Weak Map tutorial for beginners?
It is lesson 34 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.