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  1. JavaScript code examples
    JavaScript programs demonstrating basic concepts and operations
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  1. 123

    JavaScript is a versatile language used for creating dynamic, interactive web applications. It can manipulate HTML, handle events, perform calculations, and interact with APIs. Below are some practical examples covering variables, functions, DOM manipulation, and events.

    Example 1: Variables and Basic Operations

    // Declaring variables
    let a = 10;
    let b = 5;

    // Arithmetic operation
    let sum = a + b;
    console.log("Sum:", sum); // Output: Sum: 15
    Copied!

    This demonstrates variable declaration using let and performing arithmetic operations.

    Example 2: Functions

    // Function to convert Celsius to Fahrenheit
    function celsiusToFahrenheit(celsius) {
    return (celsius * 9/5) + 32;
    }

    console.log(celsiusToFahrenheit(25)); // Output: 77
    Copied!

    Functions in JavaScript can take parameters and return values, making them reusable for different inputs.

    Example 3: DOM Manipulation

    // Change text content of an element
    document.getElementById("demo").innerHTML = "Hello JavaScript!";
    Copied!

    This modifies the HTML element with id="demo" dynamically.

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  2. W3School
    https://www.w3schools.com › js › js_examples.asp

    JavaScript Examples - W3Schools

    Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.

    • From the example above, you can read: exp 1 sets a variable before the loop starts …

    See results only from w3schools.com
  3. Programiz
    https://www.programiz.com › javascript › examples

    JavaScript Examples - Programiz

      1. JavaScript Program To Print Hello World.
      2. JavaScript Program to Add Two Numbers.
      3. JavaScript Program to Find the Square Root.
      4. JavaScript Program to Calculate the Area of a Triangle.
      5. JavaScript Program to Swap Two Variables.
      See full list on programiz.com
  4. GeeksForGeeks
    https://www.geeksforgeeks.org › javascript › javascript-exa…

    JavaScript Programming Examples - GeeksforGeeks

    Feb 21, 2026 · In this section, we've collected important JavaScript examples that deal with objects. Whether you're just starting or you're already familiar with …

  5. Tutorial Republic
    https://www.tutorialrepublic.com › javascript-examples.php

    JavaScript Examples - Tutorial Republic

    An extensive collection of JavaScript examples covering topics like data types, conditional statements, loops, functions, objects, DOM, math, data and time, etc. to help you understand how JavaScript is …

  6. TutorialsPoint
    https://www.tutorialspoint.com › javascript › javascript_examples.htm

    JavaScript Examples - Online Tutorials Library

    These JavaScript examples are organized by topics and arranged from easy to difficult questions. Solving questions based on these topics will help improve your JavaScript problem-solving capabilities.

  8. freefrontend.org
    https://freefrontend.org › javascript-code-examples

    JavaScript Code Examples free collection

    3 days ago · Explore high-quality JavaScript code examples for beginners and developers. Learn practical scripts, UI components, animations, DOM manipulation, and real-world coding solutions to …

  9. Free Frontend
    https://freefrontend.com › javascript-code-examples

    JavaScript Examples - Free Frontend

    Here, you’ll find a comprehensive collection of JavaScript examples designed to enhance your web projects. Our selection includes practical implementations of Background Effects, Buttons, Carousels, …

  10. Quackit Tutorials
    https://www.quackit.com › javascript › examples

    JavaScript Examples - Quackit Tutorials

    Basic JavaScript examples, including popups, status bar messages, dropdown menus, image rollovers, and more.

  11. Github
    https://github.com › mdn › js-examples

    GitHub - mdn/js-examples: Code examples that accompany the MDN ...

    15 rows · This repository contains examples of JavaScript usage. The "promises-test" directory contains a JS promises test example, for learning purposes. Run the example live. The "modules" directory …

  12. basescripts.com
    https://basescripts.com › ... · PDF file

    100 Common JavaScript Coding Snippets and Examples

    Ideal for beginners and seasoned developers alike, this collection serves as both a learning resource and a handy reference for tackling common JavaScript challenges. Get ready to level up your coding with …

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