Q531. How do you define multiple properties on an object?
The `Object.defineProperties()` method is used to define new or modify existing properties directly on an object and returning the object. Let's define multiple propertie...
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Q532. When to use client and server components?
You can efficiently build nextjs application if you are aware about which part of the application needs to use client components and which other parts needs to use server...
Q533. What is the MEAN stack?
The MEAN (MongoDB, Express, AngularJS, and Node.js) stack is the most popular open-source JavaScript software tech stack available for building dynamic web apps where you...
Q534. What are the differences between page router and app router in nextjs?
Next.js provides two different routing systems: the **Page Router** (traditional) and the **App Router** (introduced in Next.js 13). The App Router is built on React Serv...
Q535. What is obfuscation in javascript?
Obfuscation is the deliberate act of creating obfuscated javascript code(i.e, source or machine code) that is difficult for humans to understand. It is something similar ...
Q536. Can you describe the useMemo() Hook?
The `useMemo()` Hook in React is used to **optimize performance** by **memoizing the result of expensive calculations**. It ensures that a function is **only re-executed ...
Q537. Why do you need Obfuscation?
Below are the few reasons for Obfuscation, 1. The Code size will be reduced. So data transfers between server and client will be fast. 2. It hides the business logic from...
Q538. Can Hooks be used in class components?
No, Hooks cannot be used inside class components. They are specially designed for function components. This is because hooks depend on the sequence in which they are call...
Q539. What is Minification?
Minification is the process of removing all unnecessary characters(empty spaces are removed) and variables will be renamed without changing it's functionality. It is also...
Q540. What is an updater function? Should an updater function be used in all cases?
An **updater function** is a form of `setState` where you pass a **function** instead of a direct value. This function receives the **previous state** as an argument and ...