Cleaning up arrays is a common task in JavaScript, especially when working with data from APIs, forms, or user input. Sometimes, arrays may contain unwanted values like null […]
Remove Duplicates from an Array Using filter()
When we work large datasets, removing duplicates is a critical technique to work with unique values. const items = ["apple", "banana", "apple", "orange", "banana", "kiwi"]; const uniqueItems = […]
Filtering and Removing from an Array
Filtering an array to remove certain items is a fundamental technique in JavaScript. To better understand real-world challenges, let’s look at a practical example. Suppose you have an […]
Converting array of objects using map
Converting an array of objects using map() is a fundamental technique in JavaScript. For example, if you’ve retrieved a dataset from an API but only need to display […]
Real-World Example with map(), filter(), and reduce() Chained Together
Map, filter, and reduce provide fundamental functionality for working with arrays and objects in JavaScript. Understanding how to chain them together is key to writing clean and efficient […]
Filtering and Mapping Objects in JavaScript
To understand filtering and mapping objects in javascript, we will work on an example. At the very first step we have a users array, filled with objects. We […]
Mapping and Filtering in JavaScript
To map and filter an array in JavaScript, we can use the filter() and map() methods together. To demonstrate this functionality, let’s write a function that returns all […]