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Redux is a predictable state container for JavaScript apps. It helps manage the state of an application in a single immutable state tree.
Redux is commonly used with React to manage the state of the application.
Actions are dispatched to update the state in Redux.
Reducers specify how the state changes in response to actions.
Selectors are used to extract specific pieces of state from the Redux store.
Middleware can be used...
Closure is a function that retains access to variables from its parent scope even after the parent function has finished executing.
Closure allows a function to access and manipulate variables from its outer function's scope.
It occurs when a function is defined within another function and the inner function uses variables from the outer function.
Closure helps in creating private variables and functions in JavaScript.
Exa...
Variable declaration in JavaScript
Use 'var', 'let', or 'const' to declare variables
Variables declared with 'var' have function scope
Variables declared with 'let' or 'const' have block scope
Variables declared with 'const' cannot be reassigned
Use descriptive variable names
Top trending discussions
I applied via Naukri.com
I am open to discussing salary based on the responsibilities and requirements of the position.
I am flexible and open to negotiation.
I am looking for a fair and competitive salary.
I am more interested in the overall compensation package rather than a specific number.
I would like to be compensated based on my skills, experience, and the value I can bring to the company.
I applied via Company Website and was interviewed in May 2024. There was 1 interview round.
1 hr -duration and Question is Full of basics and technology what we have used
I applied via Naukri.com and was interviewed in Oct 2023. There were 2 interview rounds.
Hacker Rank Online Written Test
Topics covered DSA and Javascript
I applied via Recruitment Consulltant and was interviewed in Mar 2024. There was 1 interview round.
Display a list of items using Pagination concept in React
Create a list of items to display
Implement pagination logic to display a limited number of items per page
Add navigation buttons to switch between pages
Check if pair sum exists in the array using a hash map.
Use a hash map to store the difference between the target sum and each element in the array.
Iterate through the array and check if the current element exists in the hash map.
Return true if a pair sum exists, otherwise return false.
Improving website performance involves optimizing code, reducing server requests, using caching, and optimizing images.
Optimize code by minifying CSS, JavaScript, and HTML
Reduce server requests by combining files and using asynchronous loading
Utilize caching techniques like browser caching and server-side caching
Optimize images by resizing, compressing, and using modern image formats like WebP
NextJS is a React framework that allows for server-side rendering and static site generation.
NextJS is built on top of React, providing features like server-side rendering and static site generation.
It simplifies the process of building React applications by handling routing, code splitting, and more out of the box.
NextJS also supports API routes for serverless functions and data fetching.
It offers features like automa...
posted on 6 Oct 2022
I applied via LinkedIn and was interviewed in Sep 2022. There was 1 interview round.
Closures are functions that have access to variables in their outer scope, even after the outer function has returned.
Closures are created when a function is defined inside another function.
The inner function has access to the outer function's variables and parameters.
Closures can be used to create private variables and methods.
Closures can also be used to create functions with pre-set arguments.
useRef is a hook used to create a mutable ref object, while createRef is a method used to create a ref object.
useRef is a hook provided by React, while createRef is a method provided by the React library.
useRef can be used in functional components to create a mutable ref object that persists across renders.
createRef is used in class components to create a ref object that can be attached to a DOM element.
useRef can also...
posted on 11 Jun 2024
Finding common characters in 3 strings using coding
Create a function that takes in 3 strings as input
Iterate through each character of the first string and check if it exists in the other 2 strings
Store the common characters in an array and return it
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