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I applied via LinkedIn and was interviewed in Nov 2022. There were 3 interview rounds.
Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their scope.
Hoisting applies to variable and function declarations, not initializations
Variables declared with let and const are not hoisted
Function declarations are hoisted before variable declarations
Function expressions are not hoisted
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
Middlewares are software components that act as a bridge between different applications or systems.
Middlewares are used to handle common functionalities like authentication, logging, and error handling.
They can be implemented as a standalone software or as a part of a larger application.
Examples of middlewares include Express.js middleware, Django middleware, and ASP.NET middleware.
Event loop is a mechanism in JavaScript that allows asynchronous code to be executed.
Event loop continuously checks the call stack and the task queue.
If the call stack is empty, it takes the first task from the queue and pushes it to the call stack.
Event loop is responsible for handling asynchronous operations in JavaScript.
setTimeout, setInterval, and AJAX requests are examples of asynchronous operations that use even
Simple scenario with hypothetical question based on assumptions
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I applied via Naukri.com and was interviewed in Jan 2024. There were 3 interview rounds.
I applied via Naukri.com and was interviewed in Jan 2024. There were 3 interview rounds.
posted on 17 Jun 2023
I was interviewed in Dec 2022.
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