Nuance Communications Node.JS and Reactjs Developer Interview Questions and Answers

Context is a built-in feature in React for managing global state, while Redux is a separate library for managing state in React applications.

• Context is simpler to set up and use compared to Redux.

• Redux is more powerful and scalable for larger applications with complex state management needs.

• Context is recommended for simpler state management needs, while Redux is recommended for more complex state management.

• Redux has ...read more

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

var is function scoped, let and const are block scoped.

• var can be redeclared and updated within its scope

• let can be updated but not redeclared within its scope

• const cannot be updated or redeclared once declared

• let and const are not hoisted like var

• const must be initialized during declaration

Program to check whether two strings are anagrams or not

• Convert both strings to lowercase

• Remove all whitespaces from both strings

• Sort both strings alphabetically

• Compare the sorted strings, if they are equal then they are anagrams