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Xcelore
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I applied via Company Website and was interviewed in Jun 2024. There were 2 interview rounds.
Develop a TODO app live
I applied via LinkedIn and was interviewed in May 2024. There were 2 interview rounds.
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.
Hoisting can lead to unexpected behavior if not understood properly.
Closures are functions that have access to variables from their containing scope even after the parent function has finished executing.
Closures allow functions to maintain access to variables from their outer scope
They are created when a function is defined within another function
Closures are commonly used in event handlers and callbacks
Promises are a way to handle asynchronous operations in JavaScript, providing a cleaner alternative to callbacks.
Promises represent the eventual completion (or failure) of an asynchronous operation.
They allow you to chain multiple asynchronous operations together.
Promises have states: pending, fulfilled, or rejected.
You can handle the result of a promise using .then() and .catch() methods.
Example: const myPromise = new
Callback Hell is a situation in asynchronous programming where multiple nested callbacks make the code hard to read and maintain.
Occurs when multiple asynchronous operations are nested within each other
Leads to deeply nested code which is hard to read and maintain
Can be avoided by using Promises or async/await syntax
Async/Await is a feature in JavaScript that allows for asynchronous programming using promises.
Async/Await is syntactic sugar built on top of promises in JavaScript.
It allows for writing asynchronous code that looks synchronous, making it easier to read and maintain.
Async functions return a promise, which allows for chaining multiple asynchronous operations.
Await keyword is used inside async functions to wait for a pro...
A simple Todo List app built using React
Create a new React project using create-react-app
Create a Todo component to display the list of todos
Use state to manage the list of todos and input field for adding new todos
Implement functionality to add, delete, and mark todos as completed
REST API is a standard protocol for web services using HTTP, while GraphQL is a query language for APIs.
REST API follows a client-server architecture with stateless communication, while GraphQL allows clients to request only the data they need.
REST API typically uses multiple endpoints for different resources, while GraphQL uses a single endpoint for flexible data retrieval.
REST API has predefined data structures, whil...
Admin panel using mern stack to make
CORS middleware is used to enable Cross-Origin Resource Sharing in web applications.
CORS middleware allows servers to specify who can access their resources
It adds necessary headers to HTTP responses to allow cross-origin requests
Common CORS middleware libraries include 'cors' in Node.js and 'django-cors-headers' in Django
Event loop in JavaScript is a mechanism that allows asynchronous non-blocking code execution.
Event loop is responsible for handling asynchronous operations in JavaScript.
It continuously checks the call stack and the callback queue to see if there are any functions that need to be executed.
Event loop ensures that JavaScript remains single-threaded and non-blocking.
Example: setTimeout() function in JavaScript uses the ev...
I applied via Campus Placement and was interviewed in Nov 2023. There were 2 interview rounds.
Xcelore interview questions for popular designations
I applied via Approached by Company and was interviewed in Apr 2024. There was 1 interview round.
I applied via Referral and was interviewed in Jun 2023. There were 4 interview rounds.
I applied via Referral and was interviewed in Aug 2023. There were 2 interview rounds.
Create The Given Design
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posted on 14 May 2022
I applied via Naukri.com and was interviewed before May 2021. There was 1 interview round.
I applied via Referral and was interviewed before Oct 2020. There were 3 interview rounds.
I applied via Company Website and was interviewed before Mar 2021. There were 3 interview rounds.
Java assesment.
based on 9 interviews
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