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    Practicing JavaScript with small, focused examples is a great way to improve your skills. Below are some sample codes covering basic to intermediate concepts.

    1. Print "Hello, World!"

    console.log("Hello, World!");
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    2. Add Two Numbers

    function addNumbers(a, b) {
    return a + b;
    }
    console.log(addNumbers(5, 10)); // Output: 15
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    3. Check if a Number is Even or Odd

    function checkEvenOdd(num) {
    if (num % 2 === 0) {
    console.log(`${num} is Even`);
    } else {
    console.log(`${num} is Odd`);
    }
    }
    checkEvenOdd(7); // Output: 7 is Odd
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    4. Reverse a String

    function reverseString(str) {
    return str.split("").reverse().join("");
    }
    console.log(reverseString("JavaScript")); // Output: tpircSavaJ
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    5. Find the Largest Number in an Array

    function findLargest(arr) {
    return Math.max(...arr);
    }
    console.log(findLargest([10, 20, 30, 40])); // Output: 40
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    6. Generate a Random Number Between Two Values

    function getRandom(min, max) {
    return Math.floor(Math.random() * (max - min + 1)) + min;
    }
    console.log(getRandom(1, 100)); // Output: Random number between 1 and 100
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    How difficult are JavaScript coding exercises?

    Our JavaScript coding exercises progressively increase in difficulty. Beginners can start with fundamental concepts like reversing strings and counting vowels, while advanced programmers can tackle complex algorithms and data structure problems. This structured approach ensures continuous learning and skill development at your own pace.

    learn-javascript-online.com
    w3resource
    https://www.w3resource.com/javascript-exercises
    JavaScript - Exercises, Practice, Solution - w3resource
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  1. W3School
    https://www.w3schools.com › Js › js_exercises.asp

    JavaScript Exercises - W3Schools

    Test your JavaScript skills with exercises from all categories: Tip: Sign in to track your progress. If you haven't already, sign up to become a W3Schooler, and get points for every exercise you complete.

    • I completed a JS exercise on w3schools.com What is an Exercise? Test what you learned in the chapter: JS Introduction by completing 3 relevant exercises. To tr…

    See results only from w3schools.com
  2. simplyjavascript.com
    https://simplyjavascript.com › practice.html

    JavaScript Practice Hub (2026) – Exercises & Quizzes by Topic

    Practice JavaScript with topic-wise exercises and quizzes. Covers variables, data types, operators, loops, strings, functions, and more. Free and beginner-friendly.

  4. w3resource
    https://www.w3resource.com › javascript-exercises

    JavaScript - Exercises, Practice, Solution - w3resource

    Mar 7, 2025 · 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.

  5. JSchallenger
    https://www.jschallenger.com

    Free Javascript challenges online | JSchallenger

    JSchallenger offers a variety of Javascript exercises, lessons, and quizzes for all levels and topics. You can type and execute code, track your progress, and join …

  6. GeeksForGeeks
    https://www.geeksforgeeks.org › javascript › practice...

    JavaScript Exercises, Practice Questions and Solutions

    Sep 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 …

  7. learn-javascript-online.com
    https://learn-javascript-online.com › challenges

    JavaScript Coding Challenges - Practice and Improve | JavaScript ...

    Challenge yourself with our collection of JavaScript coding problems. From beginner to advanced levels, practice algorithms, data structures, and problem-solving skills.

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  9. Edabit
    https://edabit.com › challenges › javascript

    2,500+ JavaScript Practice Challenges // Edabit

    Practice JavaScript coding with fun, bite-sized exercises. Earn XP, unlock achievements and level up. It's like Duolingo for learning to code.

  10. LabEx
    https://labex.io › exercises › javascript

    JavaScript Exercises | JavaScript Challenges | LabEx

    This page provides a collection of hands-on JavaScript exercises designed to solidify understanding of the language. Apply your knowledge by solving …

  11. Exercism
    https://exercism.org › tracks › javascript › exercises

    JavaScript exercises on Exercism

    Practice JavaScript objects by tracking high scores of an arcade game. Dive deeper into JavaScript functions while preparing to cook the perfect lasagna. Learn how …

  12. Great Learning
    https://www.mygreatlearning.com › blog › javascript...

    JavaScript Practice Questions and Coding Exercises for …

    Explore 100 JavaScript practice questions, coding problems, and online exercises with solutions. Ideal for beginners to strengthen core JavaScript skills.

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