Series
Small coding exercises to test your JavaScript/TypeScript knowledge or prepare for a frontend development interview.
Here is the instruction for the coding exercise: Create a function that takes in an array of numbers and returns an object in the specified format based on their counts. Input array: [1, 2, 3, 3, 4, 3, 2, 4, 4, 5, 4] Expected return: { unique: [1...
You are given this coding instruction: Create a function to remove duplicates and empty spaces in a given string. Step one is always to consider all possible conditions and ask questions to clarify. For example: Should the check be case sensitive? ...
Here is the instruction for this coding exercise: Create a function to flatten an array without using the Array method .flat() Given an array [1,2,[3,4, [5,6,7], 8], 9, [10, [20], 30]] The function should return [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 30...
When building interactive web applications, performance often becomes a concern—especially when dealing with events that fire frequently, like scrolling, resizing, or key presses. Without control, these event handlers can overwhelm the browser and AP...
