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Implementation of Native JavaScript Methods (forEach, Map, Filter, Reduce, Every, Some)

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Aackuser
Last edited Aug 12, 2014
Created on Jun 9, 2020

This example shows how to reimplement six core JavaScript array methods—forEach, map, filter, reduce, every, and some—using native loops and callbacks. The code defines custom prototypes like `Array.prototype.myEach` and `Array.prototype.myMap`, then tests each with sample arrays and console output. It demonstrates the underlying logic of these standard APIs, including handling initial values in `myReduce` and context binding in `myFilter`. The implementation relies solely on plain JavaScript syntax, with no external libraries, and uses console logging to display results.

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