Statusneo Reactjs Developer Interview Questions and Answers

Q1. Basic react interview question like lifecycle methods and about hooks
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Q2. Javascript interview questions like hoisting, closures, function currying and es6 features.
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Q3. Function to flatten and sort an array
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A function to flatten a nested array and sort its elements in ascending order.
• Use Array.prototype.flat() to flatten the array. Example: [1, [2, 3], [4, [5]]] becomes [1, 2, 3, 4, 5].

• Use Array.prototype.sort() to sort the flattened array. Example: [3, 1, 2] becomes [1, 2, 3].

• Combine both methods in a single function for efficiency.

• Ensure to handle different data types if necessary, e.g., strings and numbers.
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Q1. Basic scrum related questions
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Q2. Challenges faced
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As a React developer, I faced challenges like state management, performance optimization, and integrating APIs effectively.
• State Management: Managing complex state across components can be challenging. For example, using Redux or Context API to handle global state.

• Performance Optimization: Ensuring components re-render only when necessary. Implementing memoization with React.memo or useMemo can help.

• API Integration: Ha...read more
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Q3. Function to find the occurrences of the word in a string
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A function to count how many times a specific word appears in a given string.
• Use the String.prototype.split() method to break the string into an array of words.

• Filter the array to count occurrences of the target word.

• Example: 'hello world hello' with target 'hello' returns 2.

• Consider case sensitivity; use toLowerCase() for case-insensitive counting.

• Return the count as a number.
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They asked hacker rank test

Q1. Routing concept
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Q2. React js coding question
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Q1. General Javascript and react questions
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Q2. 1.life cycle method 2.diff between var let const 3. Write code for to count duplicate characters from string Ect
Ans. 
Answers to common interview questions for Reactjs Developer position.
• 1. Life cycle methods in React include componentDidMount, componentDidUpdate, componentWillUnmount, etc.

• 2. 'var' has function scope, 'let' has block scope, 'const' is a constant variable.

• 3. Code to count duplicate characters in a string: const countDuplicates = (str) => { const count = {}; str.split('').forEach(char => { count[char] = count[char] ? co...read more
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Q1. Microforntend, design pattern, array reduce method ect
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Q1. Basics of Javascript
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Q2. Basics of React
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Q1. Basic reactjs Questions with some javascript coding snippets
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Q1. Integrate web sphere and web server
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Integrating WebSphere and Web Server involves configuring the two to work together seamlessly.
• Configure WebSphere to use the Web Server as a front-end server

• Set up the Web Server plugin in WebSphere

• Define virtual hosts in WebSphere to match the Web Server configuration

• Ensure proper communication between WebSphere and Web Server through ports and protocols
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