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Data structures: Array vs Object

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Aaanaedu
Last edited May 1, 2021
Created on May 1, 2021

This example contrasts array and object data structures for grouping colored balls by category. It uses plain JavaScript objects and arrays to represent a basket of balls, then demonstrates two problems: first, grouping balls into fixed red, green, and blue containers with explicit if-statements; second, scaling to an arbitrary number of categories using a dictionary (object) that dynamically creates new containers when an unseen color appears. The code shows how object keys map to category names, enabling flexible retrieval via bracket notation like `categoryObj[type]`.

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