W3Resource
w3resource.com › javascript-exercises
JavaScript Exercises, Practice, Solution - w3resource
This resource offers a total of 4905 JavaScript problems for practice. It includes 1041 main exercises, each accompanied by solutions, detailed explanations, and three/four related problems.
GeeksforGeeks
geeksforgeeks.org › javascript › practice-javascript-online
JavaScript Exercises, Practice Questions and Solutions - GeeksforGeeks
September 24, 2025 - In this section, we’ll divide into different JavaScript topics like strings, arrays, numbers, objects, and more. Each topic comes with hands-on exercises and quizzes to help you practice concepts, test your knowledge, and build problem-solving confidence step by step.
Hands down the best place to learn Javascript for beginners.
You have to put http:// protocol identifier in your ()'s... like this [javascript.info]( http://javascript.info ) More on reddit.com
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June 28, 2018Feel like I know JavaScript, then i have to solve problems and blank and feel useless.
You might know "JavaScript" - but you don't know how to think like a programmer. This is a pretty standard problem with people who do freecodecamp and things like that. You follow along, but you're never really forced to develop problem solving skills. Try and go back to basics. Start simple and this time, don't look for sand-box gamified things or the answers. Focus on understanding the problem and the tools/concepts that a programming language gives you. Try this one: https://the-winter.github.io/codingjs/ - but then create your own programs based on things you make up. And when you're to work with JS and interfaces, try the book Exercises for Programmers (prag prog). You can do it! More on reddit.com
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March 18, 2024Organized solutions to SuperSimpleDev's JavaScript course exercises?
On github, from the main repo page, there's a "<> Code" button that has an option to "Download ZIP" allowing you to download all the code at once. More on reddit.com
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October 12, 2025How do you improve your problem solving skills?
The more you do something, the better you'll get at it. There isn't really a way around just putting in the time. Keep coding and "solving problems" and you'll get better. More on reddit.com
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September 28, 201808:39
E1 - Solution - JavaScript Problem Solving on Variables for beginners ...
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50 JavaScript Interview Questions Solved in 1 Hour - YouTube
JavaScript Interview Questions - Solve Coding Problems with Examples ...
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25 Beginner JavaScript Challenges in 2 hours #fullstackroadmap (Ep.
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Easy Array Problems in JavaScript | Day 10/21 of Problem Solving ...
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HackerRank 10 Days of JavaScript Solutions: Loops (Day 2) - YouTube
MDN Web Docs
developer.mozilla.org › en-US › docs › Learn_web_development › Howto › Solve_JavaScript_problems
Solve common JavaScript problems - Learn web development | MDN
3 weeks ago - The following links point to solutions to common problems you may encounter when writing JavaScript. If your code doesn't work and/or the browser complains that something is undefined, check that you've spelt all your variable names, function names, etc.
BrowserStack
browserstack.com › home › guide › common javascript issues and its solutions
Common JavaScript Issues and its Solutions | BrowserStack
August 28, 2023 - Initialize arrays properly and use correct methods. Avoid operator confusion (=, ==, ===). Use strict mode (“use strict”) for reliable code. Optimize DOM manipulation with fragments for performance.
GitHub
github.com › jeantimex › javascript-problems-and-solutions
GitHub - jeantimex/javascript-problems-and-solutions: :trident: A collection of JavaScript problems and solutions for studying algorithms. · GitHub
:trident: A collection of JavaScript problems and solutions for studying algorithms. - jeantimex/javascript-problems-and-solutions
Starred by 539 users
Forked by 157 users
Languages JavaScript 99.7% | Python 0.3%
JSCHALLENGER
jschallenger.com
Free Javascript challenges online | JSchallenger
Solve Javascript tasks from beginner to advanced levels. Select your topic of interest and start practicing.
Codementor
codementor.io › community › interesting javascript problems and solutions
Interesting JavaScript Problems and Solutions | Codementor
October 24, 2022 - In this post, we're going to solve some JavaScript problems you may be asked to solve in a technical interview. (1)Two Sum Problem Given an array of integers, return indices of the two numbers such...
Edabit
edabit.com › challenges › javascript
2,500+ JavaScript Practice Challenges // Edabit
Create a function that takes a number as an argument, increments the number by +1 and returns the result. Examples addition(0) ➞ 1 addition(9) ➞ 10 addition(-3) ➞ -2 Notes Don't forget to return the result. If you get stuck on a challenge, find help in the Resources tab. If you're really stuck, unlock solutions in the So …
DEV Community
dev.to › koolkamalkishor › 40-essential-javascript-coding-challenges-for-interviews-and-practice-4d17
40+ Essential JavaScript Coding Challenges for Interviews and Practice - DEV Community
April 28, 2025 - In this blog, we'll walk through 40+ JavaScript problems and solutions, ranging from string manipulation to algorithms like sorting and recursion.
CodeChef
codechef.com › practice › javascript
Practice JavaScript
Practice JavaScript online with our set of coding problems selected for beginners. Solve these JavaScript coding problems and prepare for your interviews.
Technoption
technoption.com › anasayfa › most common javascript problems and solutions (with examples)
Most Common JavaScript Problems and Solutions (With Examples) -
September 11, 2025 - Always prefer let and const for predictable scoping. JavaScript automatically converts types with ==, which may cause unexpected behavior.
Codecademy
codecademy.com › home › 12 javascript code challenges for beginners
12 JavaScript Code Challenges for Beginners
June 28, 2024 - You can use what you’re comfortable with on your local machine, or you can use the environments you’re familiar with in online JavaScript courses. Don’t forget that Google can also help if you find yourself stuck on a coding problem, but try to see if you can create a solution before heading to the search engine. Try to make the solution to this problem as efficiently as possible. Consider using loops that would allow you to type the fewest characters/commands. While you could simply print the even numbers, get creative and see how you could output them in a way that would work up to 10 or even up to 10,000 with little extra effort.
GreatFrontEnd
greatfrontend.com › questions › javascript-interview-questions
JavaScript Interview Questions | Solutions by Ex-FAANG interviewers
Practice 530+ curated JavaScript Interview Questions in-browser, with solutions and test cases from big tech ex-interviewers
JSCodebox
jscodebox.com
Free JavaScript Challenges online ‒ JSCodebox
Solve JavaScript challenges online for free. Earn experience and share your solutions with other programmers. Free and without required login!
GitHub
github.com › rradfar › javascript-coding-challenges
GitHub - rradfar/javascript-coding-challenges: JavaScript Coding Challenges for Beginners · GitHub
For this challenge, you may NOT use the JavaScript built-in reverse() method. const reverseString = str => { // Your solution }; console.log(reverseString('hello')); // 'olleh' console.log(reverseString('world')); // 'dlrow' console.log(reverseString('')); // '' console.log(reverseString('h')); // 'h' ... const reverseString = str => { let result = ''; for (let char of str) { result = char + result; } return result; }; ... Write a function that takes a positive number num and returns its multiplicative persistence, which is the number of steps it takes to multiply all the digits of num by each other, and repeating with the product until a single digit is obtained.
Starred by 197 users
Forked by 70 users
LeetCode
leetcode.com › studyplan › 30-days-of-javascript
30 Days of JavaScript - Study Plan - LeetCode
Learn JS Basics with 30 Qs
Codeforces
codeforces.com › blog › entry › 84159
Problem Solving With JavaScript - Codeforces
I must load and bring the file before taking user input. Here is the name of my JS file ab.js. Example: load('ab.js') This way I have to load the file every time I take input. Problem Link: (https://codeforces.com/contest/1144/problem/C) JavaScript Solution: (https://codeforces.com/contest/1144/submission/86218601) Node.js Solution: (https://codeforces.com/contest/1144/submission/86221729)
Programiz PRO
programiz.pro › community-challenges › javascript
JavaScript Coding Challenges | Programiz PRO
JavaScript Essentials · Canvas Foundations · Brick Breaker · Skill · Async API Handling · React Web App · React Hooks · React Beyond Basics · Build with Claude · Practical Git and GitHub · Change Language · Solve a problem from a list of 600+ unique problems.Start Challenge ·
Microverse
microverse.org › home › blog › 10 advanced javascript code challenges
10 Advanced Javascript Code Challenges
August 18, 2023 - Here are 10 Advanced JavaScript Challenges you can use to improve your coding skills when learning complicated JS code.
Awesomeopensource
awesomeopensource.com › project › jeantimex › javascript-problems-and-solutions
Javascript Problems And Solutions Alternatives
:trident: A collection of JavaScript problems and solutions for studying algorithms.