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Software Engineering

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From frontend, backend to system design, a complete collection of the most common interview questions

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Latest Articles

Practice: TypeScript Variables and Functions

Test your understanding of TypeScript variables and functions. These exercises cover type annotations, function parameters, return types, and handling optional data to build practical skills.

TypeScript Interfaces and Types Practice: Building Real-World Type Safety

Practice exercises for mastering TypeScript interfaces and type aliases. Work through progressively challenging scenarios that mirror real development tasks, from basic object typing to complex API responses and state management.

Practice: TypeScript Basic Types

Test your understanding of TypeScript's basic types. These exercises cover primitives, arrays, objects, and type inference to help you build a strong foundation.

Feature Articles

[Medium] LeetCode JS 30 - 2625. Flatten Deeply Nested Array

Learn how to flatten deeply nested arrays in JavaScript without using the built-in Array.flat method. This tutorial introduces a recursive approach to flattening multi-dimensional arrays to a specified depth. Enhance your JavaScript skills with this comprehensive guide!

How to remove duplicates from an array?

Learn multiple solutions to remove duplicates from an array efficiently in JavaScript. This tutorial covers four methods: using Set, filter with indexOf, nested for loop, and utilizing Object or Map. Enhance your JavaScript skills and be well-prepared for array manipulation challenges in interviews and real-world scenarios.

The Most Common JavaScript Event Loop Interview Questions

The event loop is a common question in interviews. In addition to knowing the concept, You also need to know how it works in code. Here we have listed common JavaScript event loop code interpretation questions

What is the CSS Box Model?

When the browser engine lays out the document, it will treat each element as a rectangular Box according to the Box Model of CSS. This Box is composed of content, padding, border and margin.