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Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during compilation.
Variable and function declarations are hoisted to the top of their scope.
Only declarations are hoisted, not initializations.
Function declarations take precedence over variable declarations.
JavaScript is a high-level, interpreted programming language used for creating interactive websites and web applications.
JavaScript is often used for client-side scripting to make web pages interactive.
It can also be used for server-side development with Node.js.
JavaScript is versatile and can be used for creating games, mobile apps, and more.
Callback hell is a situation in asynchronous JavaScript programming where multiple nested callbacks make the code difficult to read and maintain.
Occurs when multiple asynchronous operations are nested within each other
Leads to deeply nested code structure which is hard to read and debug
Can be avoided by using promises, async/await, or modularizing code
Asynchronous nature in Node JS refers to the ability of the program to execute multiple tasks simultaneously without blocking the main thread.
Allows non-blocking I/O operations, improving performance and scalability
Uses event-driven architecture to handle multiple requests concurrently
Uses callbacks, promises, and async/await for handling asynchronous operations
Async await in Node.js is a feature that allows you to write asynchronous code in a synchronous manner.
Async await is built on top of Promises in Node.js.
It allows you to write asynchronous code that looks like synchronous code, making it easier to read and maintain.
The 'async' keyword is used to define a function as asynchronous, while the 'await' keyword is used to wait for a Promise to resolve before continuing...
Closures are functions that have access to their own scope, as well as the scope in which they were defined.
Closures allow functions to access variables from their outer scope even after the outer function has finished executing.
They are commonly used in event handlers, callbacks, and in functional programming.
Example: const outerFunction = () => { const outerVar = 'I am outer'; return () => { console.log(outerVar...
Spread operator allows an iterable to be expanded in places where zero or more arguments or elements are expected. Rest operator collects all the remaining elements into an array.
Spread operator is denoted by three dots (...) and is used to expand elements of an iterable like an array or object.
Rest operator is also denoted by three dots (...) and is used to collect multiple elements into a single array.
Spread ope...
I applied via Approached by Company and was interviewed before Apr 2023. There was 1 interview round.
Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during compilation.
Variable and function declarations are hoisted to the top of their scope.
Only declarations are hoisted, not initializations.
Function declarations take precedence over variable declarations.
Closures are functions that have access to their own scope, as well as the scope in which they were defined.
Closures allow functions to access variables from their outer scope even after the outer function has finished executing.
They are commonly used in event handlers, callbacks, and in functional programming.
Example: const outerFunction = () => { const outerVar = 'I am outer'; return () => { console.log(outerVar); };...
JavaScript is a high-level, interpreted programming language used for creating interactive websites and web applications.
JavaScript is often used for client-side scripting to make web pages interactive.
It can also be used for server-side development with Node.js.
JavaScript is versatile and can be used for creating games, mobile apps, and more.
Spread operator allows an iterable to be expanded in places where zero or more arguments or elements are expected. Rest operator collects all the remaining elements into an array.
Spread operator is denoted by three dots (...) and is used to expand elements of an iterable like an array or object.
Rest operator is also denoted by three dots (...) and is used to collect multiple elements into a single array.
Spread operator...
Callback hell is a situation in asynchronous JavaScript programming where multiple nested callbacks make the code difficult to read and maintain.
Occurs when multiple asynchronous operations are nested within each other
Leads to deeply nested code structure which is hard to read and debug
Can be avoided by using promises, async/await, or modularizing code
Asynchronous nature in Node JS refers to the ability of the program to execute multiple tasks simultaneously without blocking the main thread.
Allows non-blocking I/O operations, improving performance and scalability
Uses event-driven architecture to handle multiple requests concurrently
Uses callbacks, promises, and async/await for handling asynchronous operations
Async await in Node.js is a feature that allows you to write asynchronous code in a synchronous manner.
Async await is built on top of Promises in Node.js.
It allows you to write asynchronous code that looks like synchronous code, making it easier to read and maintain.
The 'async' keyword is used to define a function as asynchronous, while the 'await' keyword is used to wait for a Promise to resolve before continuing.
Usin...
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I applied via Campus Placement and was interviewed in Sep 2024. There were 3 interview rounds.
Aptitude questions with some basic coding questions
They have given 3 coding questions and some pseudo codings
posted on 1 Nov 2024
I applied via Campus Placement and was interviewed in Oct 2024. There were 2 interview rounds.
Number series in aptitude involves identifying the pattern in a sequence of numbers and predicting the next number.
Look for patterns such as arithmetic progression, geometric progression, or a combination of both.
Check for alternate numbers, differences between consecutive numbers, or multiplication factors.
Consider prime numbers, squares, cubes, or other mathematical operations applied to the series.
Example: 2, 4, 6, ...
Relationships in verbal communication are crucial for effective collaboration and understanding.
Verbal communication involves both verbal and non-verbal cues
Active listening is key to building strong relationships in verbal communication
Clarity and conciseness in speech can enhance relationships
Empathy and understanding of others' perspectives are important in verbal relationships
The four branches of OOP are encapsulation, inheritance, polymorphism, and abstraction.
Encapsulation: Bundling data and methods that operate on the data into a single unit.
Inheritance: Allowing a class to inherit properties and behavior from another class.
Polymorphism: The ability for objects of different classes to respond to the same method call.
Abstraction: Hiding the complex implementation details and showing only ...
Structures in C are user-defined data types that allow grouping of variables of different data types under a single name.
Structures are used to represent a record which consists of different data types.
They are defined using the 'struct' keyword.
Each variable in a structure is called a member.
Structures can be nested within other structures.
Example: struct employee { int emp_id; char emp_name[50]; float emp_salary; };
E...
I appeared for an interview in Feb 2025.
They asked one coding question that is for star pattern question
I applied via Campus Placement and was interviewed in Sep 2023. There were 4 interview rounds.
Python based questions
I applied via Recruitment Consulltant and was interviewed in Apr 2024. There was 1 interview round.
This question tests your ability to identify and generate patterns in coding.
Understand the pattern: Analyze the given examples to identify the underlying rule.
Use loops: Implement loops to generate sequences based on the identified pattern.
Consider edge cases: Ensure your solution handles special cases, like empty arrays or single elements.
Optimize for performance: Think about the time complexity of your solution, esp...
posted on 24 Apr 2024
I applied via Campus Placement and was interviewed in Oct 2023. There were 3 interview rounds.
It was online 60min test.
It was offline 30 min test.
based on 3 interview experiences
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