650+ Frontend Interview Questions (JavaScript, React, Next.js & More) — My Complete Prep Journey

This article discusses the process of creating a React and Next.js project using Docker for both development and production environments. It highlights the benefits of using Docker, such as consistency and ease of deployment, making it a valuable resource for developers looking to streamline their workflow.

Starting my internship at Thinkvyne Digital as a Software Developer was an eye-opening experience. I dove into building an Academic Management System using cutting-edge technologies like React and PHP Laravel. From the very first day, I took charge of the UI for both the user app and admin panel, which was both challenging and rewarding. This opportunity not only enhanced my technical skills but also gave me a taste of the startup culture, where innovation and collaboration thrive.

A new member has joined the DEV community, excited to share their journey and insights. With experience in JavaScript, Python, and TypeScript, they are eager to contribute to discussions and explore AI tools. This is a great addition to the community, as fresh perspectives can inspire innovation and collaboration among developers.

In this article, the author emphasizes the importance of understanding deep and shallow cloning in JavaScript, building on previous discussions about mutability and immutability. This knowledge is crucial for developers as it helps them manage data structures effectively, ensuring they can work with both mutable and immutable data types. By grasping these concepts, programmers can write more efficient and error-free code, which is essential in today's fast-paced tech environment.

This article sheds light on the differences and advantages of popular package managers like npm, Yarn, and pnpm, which are essential tools in the JavaScript ecosystem. Understanding these distinctions is crucial for developers as it can significantly enhance their workflow and efficiency in managing dependencies in Node.js projects.

The article explores the concept of asynchronous loops in JavaScript, addressing a common question about iterating over arrays asynchronously. It highlights the use of the 'for' loop combined with 'await' for handling asynchronous operations, providing a practical example. This topic is significant for developers looking to enhance their coding skills and improve the efficiency of their applications.

In 2025, Next.js has solidified its position as the leading framework for React applications, surpassing Create React App. This framework, developed by Vercel, offers a range of features like server-side rendering and static site generation, making it easier for developers to create high-performance web applications. Its automatic optimizations and file-based routing streamline the development process, allowing teams to focus on building great user experiences. As the industry standard, adopting Next.js is essential for developers looking to stay competitive.

The Nullish Coalescing Operator (??) is a modern logical operator in JavaScript that simplifies handling default values. It allows developers to provide a fallback value when a variable is null or undefined, enhancing code readability and efficiency. This operator is particularly useful in scenarios where you want to ensure that your variables have meaningful values, making it easier to write robust applications.

Coinbase CEO Brian Armstrong recently took to social media to highlight the vulnerabilities in prediction markets like Kalshi and Polymarket. While some users may have profited from his insights, Armstrong's actions also underscore the ease with which these markets can be manipulated, raising concerns about their integrity and reliability. This matters because it calls into question the trustworthiness of platforms that many rely on for financial decisions.

The evaluation of generative AI's success hinges on an important metric known as the Knowledge Retention Rate (KRR). This rate indicates how effectively users retain and utilize AI-generated knowledge in their tasks over a month. For instance, a language learning app that provides tailored grammar lessons can significantly enhance user engagement and learning outcomes if users consistently apply what they've learned in follow-up exercises. This metric not only highlights the effectiveness of AI in education but also underscores its potential to transform how we learn and retain information.

Creating stunning websites that impress and convert is essential in today's digital world. It's not just about aesthetics; it's about evoking emotions and ensuring functionality. Great developers know how to blend these elements to create memorable user experiences. By focusing on the feeling a website conveys rather than just the technical framework, developers can craft sites that truly resonate with users, making them more likely to engage and convert.

AllPub is here to revolutionize the way creators and marketers publish their content across platforms. This step-by-step guide not only helps you get started with signing up and setting up your account but also highlights the key features that make content management easier and more efficient. By simplifying the publishing process, AllPub allows you to focus more on creativity and less on logistics, making it a valuable tool for anyone looking to enhance their online presence.

Hacktoberfest 2025 is not just an event; it's a vibrant celebration of the open source community. This year, participants are encouraged to share their coding journeys, highlighting the educational projects and collaborative challenges that shape their experiences. By documenting their contributions, they not only enhance their skills but also inspire others to engage in the world of coding and open source. This initiative fosters a spirit of learning and collaboration, making it a significant moment for developers and tech enthusiasts alike.

In the latest development for banking QA, a new privacy-first log analyzer is set to revolutionize how QA teams utilize production logs. With a staggering 32% of their time wasted on creating test data that already exists, this innovative system promises to enhance efficiency while ensuring compliance with PII regulations. The technology boasts an impressive 94% accuracy in detecting PII and operates with a scrubbing latency of under 50 milliseconds. This advancement not only streamlines the QA process but also addresses critical security concerns, making it a significant step forward for the banking industry.