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posted on 7 Feb 2024
Closures in JavaScript are functions that have access to variables from their outer scope, even after the outer function has finished executing.
Closures are created when a function is defined inside another function.
The inner function has access to the outer function's variables, parameters, and even the outer function's return value.
Closures are useful for creating private variables and data encapsulation.
They can be ...
Props and state are both used in React to manage and pass data, but they have different purposes and behaviors.
Props are read-only and passed from parent components to child components.
State is mutable and managed within a component.
Props are used to pass data from a parent component to a child component.
State is used to manage and update data within a component.
Props are passed as attributes to a component in JSX.
Stat...
Performance optimization involves identifying and resolving bottlenecks to improve the efficiency of software.
Identify and analyze performance bottlenecks
Optimize algorithms and data structures
Improve database performance through indexing and query optimization
Use caching techniques to reduce database and network calls
Minimize network latency by optimizing network requests
Optimize front-end code by reducing DOM manipul...
Class-based components are ES6 classes that extend React.Component, while function-based components are functions that return JSX.
Class-based components are more feature-rich and have access to lifecycle methods.
Function-based components are simpler and easier to read and test.
Class-based components can have state and use lifecycle methods like componentDidMount and componentDidUpdate.
Function-based components can use ...
ES6 (ECMAScript 2015) introduced several new features to JavaScript, enhancing its functionality and making it more efficient.
Arrow functions: concise syntax for writing functions
Let and const: block-scoped variables
Template literals: easier string interpolation
Destructuring assignment: extracting values from arrays or objects
Spread syntax: expanding elements in arrays or objects
Classes: syntactical sugar for creating ...
posted on 16 Feb 2024
I applied via LinkedIn and was interviewed in Aug 2023. There were 2 interview rounds.
It will good and easy for me to attend it
Questions in collection,java 8 concepts.
posted on 11 Oct 2020
OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.
OOPs is based on the four main concepts: Encapsulation, Inheritance, Polymorphism, and Abstraction.
Encapsulation is the process of hiding the implementation details from the user.
Inheritance is the process of creating a new class from an existing class.
Polymorphism is the ability of an object to take on many forms.
...
posted on 5 Jun 2021
I applied via Recruitment Consultant and was interviewed in May 2021. There was 1 interview round.
posted on 25 Sep 2023
I applied via Company Website and was interviewed in Aug 2023. There were 2 interview rounds.
posted on 2 Aug 2022
I applied via Naukri.com and was interviewed in Jul 2022. There were 2 interview rounds.
Promise is a one-time event while Observable can emit multiple values over time.
Promise is used for asynchronous operations that will return a single value or an error.
Observable is used for asynchronous operations that can return multiple values over time.
Promise can be in one of three states: pending, fulfilled, or rejected.
Observable can emit values, errors, and completion events.
Promise can be converted to an Obser...
Angular lifecycle hooks are methods that get called at specific stages of a component's lifecycle.
ngOnInit() - called after the component is initialized
ngOnChanges() - called when the component's input properties change
ngOnDestroy() - called just before the component is destroyed
ngAfterViewInit() - called after the component's view has been initialized
ngAfterContentInit() - called after the component's content has been
Jwt security implementation in Angular
Install angular-jwt package
Create an auth service to handle token storage and retrieval
Add an HttpInterceptor to attach the token to outgoing requests
Use guards to protect routes based on authentication status
Most questions are from reasoning, English and math
Mostly array and string this two topic is asked
LRDI quants and verbal question
posted on 31 Oct 2022
I applied via Naukri.com and was interviewed in Oct 2022. There were 4 interview rounds.
Because it's so easy And because of that I have prepared for it
Because it's so easy and become of that I have prepared for it
Yes, I have good time management skills.
I prioritize my tasks based on their urgency and importance.
I use a to-do list to keep track of my tasks and deadlines.
I break down larger tasks into smaller, manageable chunks.
I try to minimize distractions and stay focused on the task at hand.
I regularly review my progress and adjust my schedule as needed.
I applied via Naukri.com and was interviewed in Jun 2021. There were 3 interview rounds.
Accenture
Wipro
Amazon
Infosys