JavaScript Coding Practice: 50 Coding Challenges

Strengthen your JavaScript logic with 50 hands-on coding challenges and real interview practice.

Created byAshish Saluja

Last updated 11/2025

English

What you'll learn

Develop Strong JavaScript Logic and Problem-Solving Skills
Master JavaScript Fundamentals Through 50 Hands-On Challenges
Build Confidence for Coding Interviews and Online Assessments
Write Clean, Optimized, and Professional JavaScript Code

Course content

2 sections • 55 lectures • 12h 57m total length

Introduction11:54
Rules6:51
Prepare Your Machine6:35

Challenge 1 - Hello, World!3:07
Challenge 2 - Add Two Numbers10:17
Challenge 3 - Calculate Area of a Rectangle10:46
Challenge 4 - Check Even or Odd15:15
Challenge 5 - Find the Smallest Number14:49
Challenge 6 - Reverse a String19:54
Challenge 7 - Calculate Factorial20:03
Challenge 8 - Check for Leap Year10:44
Challenge 9 - Sum of Digits16:27
Challenge 10 - Generate a Multiplication Table11:58
Challenge 11 - Find the Maximum Element17:17
Challenge 12 - Check for Palindrome17:32
Challenge 13 - Calculate Power8:33
Challenge 14 - Count Vowels and Consonants15:31
Challenge 15 - Find the Factors of a Number11:35
Challenge 16 - Calculate Average13:51
Challenge 17 - Simple Interest Calculator7:36
Challenge 18 - Check for Prime Number14:06
Challenge 19 - Count Words in a Sentence19:57
Challenge 20 - Convert Celsius to Fahrenheit5:52
Challenge 21 - Swap Two Numbers6:58
Challenge 22 - Check for Armstrong Number15:36
Challenge 23 - FizzBuzz8:49
Challenge 24 - Number Pyramid11:29
Challenge 25 - Count Characters13:44
Challenge 26 - Alphabetical Order Checker13:54
Challenge 27 - Anagram Checker13:05
Challenge 28 - Matrix Transposition25:29
Challenge 29 - Perfect Number9:17
Challenge 30 - Password Strength Checker:11:23
Challenge 31 - Matrix Multiplication28:08
Challenge 32 - Tip Calculator11:35
Challenge 33 - Palindromic Substrings13:18
Challenge 34 - Parentheses Checker17:36
Challenge 35 - Word Search Solver8:43
Challenge 36 - Random Number Generator9:29
Take Input from the User4:37
Challenge 37 - Dice Rolling Simulator:21:29
Challenge 38 - Basic Alarm Clock12:24
Challenge 39 - Number Guessing Game15:08
Challenge 40 - Basic Calculator19:51
Challenge 41 - Rock, Paper, Scissors Game22:11
Challenge 42 - Simple To-Do List13:10
Challenge 43 - Leet code challenge 120:59
Challenge 44 - Leet code challenge 222:10
Challenge 45 - Leet code challenge 327:09
Challenge 46 - Leet code challenge 417:57
Challenge 47 - Leet code challenge 519:08
Challenge 48 - Leet code challenge 613:58
Challenge 49 - Leet code challenge 716:23
Challenge 50 - Leet code challenge 816:18
Thank You!!5:26

Requirements

Basic Understanding of JavaScript Syntax
A Code Editor (VS Code Recommended)
Curiosity to Solve Problems and Learn by Doing

Description

Are you comfortable with JavaScript syntax but struggle to apply logic when solving problems? This course is designed to help you think like a programmer and strengthen your problem-solving skills through 50 carefully designed JavaScript coding challenges, real-world exercises, and interview-style problems to boost your confidence and logical thinking.

Each challenge starts with a clear problem explanation. You’ll get time to solve it on your own — just like in a real coding interview — and then watch a detailed, step-by-step solution. Along the way, you’ll learn how to break problems down, optimize your code, and write clean, efficient JavaScript functions.

You’ll cover topics such as loops, arrays, strings, recursion, matrices, and logic patterns that appear frequently in technical interviews and real-world projects. You’ll also practice algorithmic thinking, debugging skills, and mini JavaScript projects that simulate real developer scenarios. Perfect for JavaScript coding practice and interview preparation.

Whether you’re a beginner who knows JavaScript basics or a junior developer preparing for coding interviews, this course will help you build confidence and improve your logical thinking dramatically.

By the end of the course, you’ll be able to tackle complex problems, think algorithmically, and write elegant JavaScript code with ease.

Let’s unlock your coding potential — one challenge at a time!

Who this course is for:

Beginners who have just learned JavaScript basics and want to strengthen their problem-solving and logical thinking through hands-on coding challenges.
Developers with 1–2 years of experience who understand JavaScript syntax but struggle to apply logic when solving real-world problems or interview-style questions.
Students preparing for coding interviews who want to improve their algorithmic thinking using fun, structured, and practical challenges.

JavaScript Coding Practice: 50 Coding Challenges

What you'll learn

Explore related topics

Course content

Introduction3 lectures • 25min

JavaScript Challenges52 lectures • 12hr 32min

Requirements

Description

Who this course is for: