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https://github.com/shikhu51197/complete-interview-ownnotes

all interview questions based on frontend, backend, and data structures and algorithms (DSA) topics can be quite extensive
https://github.com/shikhu51197/complete-interview-ownnotes

backend concept-based-explanations dsa-algorithm example-code frontend full-stack-web-development

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all interview questions based on frontend, backend, and data structures and algorithms (DSA) topics can be quite extensive

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# Complete-interview-ownnotes

 # Interview Preparation

This repository contains a collection of interview questions and solutions for various topics related to frontend development, backend development, and data structures & algorithms. Whether you are preparing for technical interviews or want to enhance your problem-solving skills, this repository is designed to help you.



# Table of Contents



    Frontend

    Backend

    Data Structures & Algorithms

    

overview of the main topics related to React, Node.js, Express, MongoDB, and JavaScript in general, as well as Data Structures and Algorithms (DSA) in JavaScript:

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# JavaScript

Basics of JavaScript:



Variables, Data Types, Operators

Control Flow: Conditionals and Loops

Functions and Scope

Objects and Arrays

ES6+ Features: Arrow Functions, Destructuring, Spread/Rest Operator

Asynchronous JavaScript:



Callbacks, Promises, Async/Await

Handling Asynchronous Operations

ES6+ Features:



Classes and Modules

Template Literals

Promises and Async/Await

Arrow Functions

Error Handling:



try/catch blocks

Handling and Throwing Errors



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# React

React Basics:



Components and Props

State and Lifecycle

Handling Events

Conditional Rendering

React Router:



Navigation in React Apps

State Management:



Context API

Redux (Actions, Reducers, Store)

Hooks:



useState, useEffect, useContext, etc.

Custom Hooks

Component Lifecycle:



Mounting, Updating, Unmounting

Forms and Controlled Components:



Handling Form Input and Validation

Testing in React:



Unit Testing with Jest and React Testing Library



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# Node.js and Express

Node.js Basics:



Event Loop

File System Operations

Modules and npm

Express.js:



Middleware

Routing

Template Engines (optional)

RESTful API Design:



CRUD Operations

Authentication and Authorization

Error Handling

Database Integration:



Connecting to MongoDB with Mongoose

Performing CRUD Operations

Express Middleware:



Creating Custom Middleware



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# MongoDB

MongoDB Basics:



Document-based NoSQL databases

Collections and Documents

CRUD Operations:



Creating, Reading, Updating, and Deleting Documents

Indexing and Aggregation:



Optimizing Queries

Aggregation Framework

Mongoose:



Object Data Modeling in Node.js

Schema and Model Definition



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# Data Structures and Algorithms (DSA) in JavaScript

Arrays and Strings:



Manipulation, Searching, Sorting

Linked Lists:



Singly Linked Lists, Doubly Linked Lists

Stacks and Queues:



Basic Operations

Trees and Graphs:



Binary Trees, Binary Search Trees

Graph Representation, Traversal

Sorting Algorithms:



Bubble Sort, Merge Sort, Quick Sort

Searching Algorithms:



Binary Search, Linear Search

Hashing:



Hash Tables, Collision Resolution

Dynamic Programming:



Memoization, Bottom-Up Approach

Greedy Algorithms:



Activity Selection, Huffman Coding

Big O Notation:



Time and Space Complexity Analysis

These topics cover a broad range of skills required for Full Stack JavaScript development and are commonly tested in interviews for roles involving React, Node.js, Express, MongoDB, and general web development.



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# Contributing

Feel free to contribute by adding more questions, improving existing solutions, or fixing any issues. Follow the guidelines in CONTRIBUTING.md.