Neilsoft React Developer Interview Questions and Answers

Q1. What is Useeffect?
Ans. 
Useeffect is a hook in React that allows performing side effects in function components.
• Useeffect is used to perform side effects in function components.

• It runs after every render by default.

• It can be used to fetch data, subscribe to events, or update the DOM.

• It can also clean up effects by returning a function.

• Dependencies can be specified to control when the effect runs.
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Q2. What is useState?
Ans. 
useState is a hook in React that allows functional components to have state.
• useState is a built-in hook in React.

• It allows functional components to have stateful logic.

• useState returns an array with two elements - the current state value and a function to update that value.

• Example: const [count, setCount] = useState(0);
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Q3. What is sdlc lifecycle?
Ans. 
SDLC lifecycle stands for Software Development Life Cycle, which is a process used by software development teams to design, develop, and test high-quality software.
• SDLC lifecycle consists of several phases including planning, analysis, design, implementation, testing, and maintenance.

• Each phase has its own set of activities and deliverables to ensure the successful completion of the software project.

• Examples of SDLC mo...read more
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It was Aptitude plus coding round, it was online on a secured platform.

Q1. English and verbal questions.
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Q1. Mostly focused on resume. basic questions of react and javascript. OOPS and Basic DSA. Language-based questions.
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Q1. Easiest Round. Just be polite and calm.
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Q1. React and javascript interview questions
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Q1. What is your overview of React and your work experience with it?
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Q1. What is the sematic tag in HTML?
Ans. 
Semantic tags in HTML are special tags that provide meaning to the content they enclose.
• Semantic tags help search engines and screen readers understand the structure of a webpage.

• Examples of semantic tags include <header>, <footer>, <nav>, <article>, <section>, <aside>, <main>, <figure>, <figcaption>.

• Using semantic tags improves SEO and accessibility of a website.
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Q2. How to do responsive design?
Ans. 
Responsive design is creating web applications that adapt to different screen sizes and devices.
• Use media queries in CSS to adjust styles based on screen size

• Utilize flexible grids and layouts to ensure content adjusts accordingly

• Test the design on various devices and screen sizes to ensure responsiveness
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Q1. Closure Promises Basics of react, pure component
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Q2. What is closure
Ans. 
Closure is the combination of a function bundled together with references to its surrounding state.
• Closure allows a function to access variables from its outer scope even after the outer function has finished executing.

• It is created whenever a function is defined within another function.

• Closure is commonly used in event handlers, callbacks, and maintaining state in functional programming.
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Q3. Asynchronous javascript
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Q1. Normal salary discussion
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