In this video, I explain how to create a polyfill for the Array.reduce() method in JavaScript, a frequently asked question in frontend interviews. ๐ I cover two approaches: the first is by extending Array.prototype, enabling you to use reduce() like any native method, and the second is by creating a standalone custom function that replicates the functionality of reduce().
Whether you're preparing for an interview or improving your JavaScript skills, this tutorial will help you understand the mechanics of reduce() and how to build it from scratch. ๐
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