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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 ...
I applied via Naukri.com and was interviewed in Jun 2021. There were 3 interview rounds.
posted on 25 Sep 2023
I applied via Company Website and was interviewed in Aug 2023. There were 2 interview rounds.
IMocha Virtual test- contains coding and analytical questions.
An in-person coding test is given. Personal laptops to be taken
I applied via Company Website and was interviewed in Mar 2024. There was 1 interview round.
I applied via AmbitionBox and was interviewed in Sep 2023. There were 4 interview rounds.
An exam used to determine an individual's skill or propensity to succeed in a given activity.
Oops in Java stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.
Oops in Java focuses on creating objects that interact with each other to solve a problem
It involves concepts like classes, objects, inheritance, polymorphism, and encapsulation
Example: Creating a class 'Car' with properties like 'make', 'model', and methods like 'drive', 'stop'
Most questions are from reasoning, English and math
Mostly array and string this two topic is asked
A functional interface is an interface that contains only one abstract method.
Functional interfaces can have multiple default or static methods, but only one abstract method.
Functional interfaces are used in lambda expressions and method references.
Examples of functional interfaces in Java include Runnable, Callable, and Comparator.
posted on 30 Jan 2025
Fullstack = node , express , react js
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