What are advanced collections in JavaScript?
An example of an AI chatbot conversation about advanced collections in JavaScript.
What are advanced collections in JavaScript?
Advanced collections in JavaScript include data structures like Maps, Sets, WeakMaps, and WeakSets, which offer unique features.
Can you explain the difference between a Map and an Object?
Sure! A Map allows any value as a key and maintains the insertion order, while an Object only allows strings and symbols as keys.
What are the benefits of using Sets?
Sets store unique values and provide efficient methods for adding, deleting, and checking the existence of items.
How do WeakMaps differ from regular Maps?
WeakMaps hold weak references to keys, allowing for garbage collection when there are no other references, preventing memory leaks.
Can you give an example of using a Set in JavaScript?
Certainly! You can create a Set like this: const mySet = new Set([1, 2, 3, 4]); and then use methods like add(), delete(), and has().
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