23 - Group By: Grouping Arrays by Criteria

In this video, we explore how to enhance JavaScript arrays by adding a custom `groupBy` method to the Array prototype. This method allows you to group array elements based on a specified criterion provided by a callback function.
Whether you're dealing with objects, arrays, or simple data types, this tutorial will guide you through the process of grouping elements effectively.
Grouping data is a common requirement in many applications, from organizing information in web development to processing datasets in backend services.
By learning how to implement a custom `groupBy` method, you gain the ability to efficiently categorize and manage data in your projects. This video provides a comprehensive guide to enhancing JavaScript arrays, ensuring you understand both the theory and practical aspects of extending array functionality.
Join us in this tutorial to master the art of grouping arrays in JavaScript, making your code more organized, readable, and efficient. Whether you're a beginner or an experienced developer, this video will enhance your understanding of array manipulations and prototype extensions.
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0:18 - Read Problem
06:02 - Solution
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