The title says it all 🐐. I want to talk about my all-time favorite javascript array method:... Tagged with webdev, javascript, typescript, beginners.

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Discover the power and versatility of Array.reduce() through nine incredible use cases, including summing numbers, flattening arrays, grouping objects, creating lookup maps, counting occurrences, composing functions, implementing state management, generating unique values, and calculating averages.

Array.reduce() is Goated

How does Array.reduce() compare to a for-of loop? I would use a for-of loop for most of the examples. Yes, this needs two or three more lines of code but is much more readable. Compressing code into fewer lines doesn’t make it better, just worse to read.

in case i aggregate the data and return an array i prepared using flatMap because its more readable

this definitely stands as G.O.A.T

“By mutating the accumulator array using push(), we avoid creating new arrays in each iteration, resulting in better performance.” Oh good one