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This repository is a comprehensive and in-depth guide to mastering JavaScript for technical interviews. It includes detailed concepts, real-world problem-solving, and interview-focused questions that cover everything from fundamentals to advanced topics.
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This repository is a comprehensive resource for JavaScript interview and placement preparation. It covers all core concepts, practical coding problems, and advanced topics, with clear explanations and code samples. Each file is focused on a specific topic or set of questions commonly asked in technical interviews.
01-variables-and-data-types.js
Covers variable declarations (var, let, const), data types, and scoping rules.
Explanation:
var is function-scoped, while let and const are block-scoped.const cannot be reassigned.02-functions.js
Shows function declarations, expressions, arrow functions, default/rest parameters.
Explanation:
this.03-arrays-and-methods.js
Demonstrates array creation and methods like map, filter, reduce, forEach, find.
Explanation:
map creates a new array by transforming each element.filter creates a new array with elements that pass a test.reduce accumulates array values into a single result.04-objects.js
Object creation, property access, destructuring, cloning, and methods.
Explanation:
Selected from shared topics, language and repository description—not editorial ratings.
rahul-cwr /
Welcome to the JavaScript Interview Preparation repository! This resource is designed to help you prepare for interviews by providing:
51/100 health...) can clone objects.05-es6-features.js
ES6+ features: template literals, destructuring, spread/rest, modules.
Explanation:
06-asynchronous.js
Callbacks, Promises, async/await.
Explanation:
async/await simplifies asynchronous code.07-dom-manipulation.js
DOM selection, events, and content manipulation (for browser environment).
Explanation:
getElementById, querySelector to select elements.08-advanced-topics.js
Closures, hoisting, scope, prototypes, inheritance, this keyword.
Explanation:
this refers to the calling context.09-coding-practice.js
Common coding problems: reverse string, largest number, palindrome, FizzBuzz.
Explanation:
10-coding-practice-2.js
More coding problems: second largest, remove duplicates, count vowels, merge arrays, anagrams, etc.
Explanation:
10-coding-practice-webdev.js
Practical web development tasks: DOM events, fetch API, debounce, localStorage, etc.
Explanation:
11-js-concept-questions.js
Conceptual questions: var/let/const, async functions, function types, map/reduce, cloning, scope.
Explanation:
12-js-concept-questions-2.js
More concept questions: closures, hoisting, deep copy, destructuring, arrow functions, unique values, etc.
13-js-concept-questions-3.js
Array/object manipulation: copy, deep copy, compare, intersection, flatten, remove, merge, etc.
14-js-difference-questions.js
Difference-based questions: null vs undefined, == vs ===, function types, arrow vs regular, map vs forEach, call/apply/bind, shallow vs deep copy, sync vs async, localStorage vs sessionStorage.
15-js-concept-questions-4.js
More array/object practice: difference, chunk, count, swap, remove property, check empty, merge, random, capitalize, flatten, etc.
16-js-most-asked-interview-questions.js
Most frequently asked coding problems: reverse string, palindrome, max in array, FizzBuzz, remove duplicates, factorial, missing number, anagrams, count vowels, intersection.
.js files using Node.js (except 07-dom-manipulation.js, which is for browser console).Linkedin : https://www.linkedin.com/in/satyam-prajapati-13a690256/
Twitter : https://x.com/Satyam9352
Thank you