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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

What Is Web Worker? Where Can It Be Used?

In the early days of frontend development, there wasn't much to process on the frontend side, mostly simple event handling and animation effects. However, as frontend development has matured, developers are handling more and more tasks on the frontend, and the original JavaScript design gradually became insufficient for new demands. Various technologies have emerged to fill these gaps. Web Worker and Service Worker, commonly heard in frontend development, fall into this category.

What is XSS?

This article covers the basics of cross-site scripting (XSS) attacks, a common form of online attack. It explores how XSS attacks work and the potential consequences of an attack. The article then outlines three approaches to defending against XSS attacks, including using content security policy, preventing user input from being executed, and checking for vulnerable fields.

Understanding Reactivity from a Frontend Development Perspective

Reactivity is a programming paradigm that automatically responds to changes in data or state, ensuring applications stay synchronized with their underlying data. This article explores reactivity from a frontend development perspective, discussing its definition, why it matters, and how modern frameworks like React and Vue implement it.

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.