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    A "Hello World" program in JavaScript is the simplest way to demonstrate output and test that your environment is set up correctly. It can be done in multiple ways depending on where and how you want to run the code.

    Example – Using Browser Console:

    console.log("Hello, World!");
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    Open your browser’s Developer Tools (F12), go to the Console tab, paste the code above, and press Enter. You’ll see Hello, World! printed in the console.

    1. Using console.log() This method prints messages to the browser console, useful for debugging or logging information.

    console.log("Hello, World!");
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    When executed in a browser console or Node.js terminal, it outputs the text without interrupting user interaction.

    2. Using alert() Displays a pop-up dialog box with your message.

    <!DOCTYPE html>
    <html>
    <body>
    <script>
    alert("Hello, World!");
    </script>
    </body>
    </html>
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    Opening this HTML file in a browser will show a modal alert box.

    3. Using document.write() Writes directly into the HTML document during page load.

    <!DOCTYPE html>
    <html>
    <body>
    <script>
    document.write("Hello, World!");
    </script>
    </body>
    </html>
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    How do I write a JavaScript Hello World program?

    Text Editor is a simple program for writing code. Good beginner options for writing a basic JavaScript Hello World program are VS Code (free), Sublime Text (free), or even Notepad++ (free). Step 2: Create a file named script.js in the same folder as your HTML file. Right-click on index.html and choose "Open with... " and select your web browser.

    upgrad.com
    Programiz
    https://www.programiz.com/javascript/examples/hello-world
    JavaScript Program To Print Hello World
  1. JavaScript Tutorial
    https://www.javascripttutorial.net › javascript-hello-world

    JavaScript Hello World Example: Getting Started with JavaScript

    This tutorial helps you get started with JavaScript by embedding code in HTML, and creating a Hello, World! page.
    Creating A Javascript Hello World Project

    Step 1. Create a new project directory called helloworldto store the HTML and JavaScript files. Step 2. Open the helloworldproject directory in your favorite code editor. We’ll use the VS Code. Step 3. Create a new HTML file namedindex.html …

    Including An External Javascript File

    Step 1. Create a new directory in the project directory called js . By convention, we place the JavaScript files in a directory called js, which stands for JavaScript. Step 2. Create a new app.js file in the jsdirectory with the following code: Step 3. Modify the index.h…

    Summary

    1. Use <script>element to include a JavaScript file in an HTML page.
    2. Use alert()function to display an alert in the web browser.

  2. Programiz
    https://www.programiz.com › javascript › examples › hello-world

    JavaScript Program To Print Hello World

    In this example, you will learn to print 'Hello World' in JavaScript in three different ways.

  4. GeeksForGeeks
    https://www.geeksforgeeks.org › javascript › javascript-hello-world

    JavaScript Hello World - GeeksforGeeks

    Jan 15, 2026 · The JavaScript Hello World program is a basic example used to introduce the language and demonstrate how to display output. Prints the text "Hello, World!" to the screen. Helps beginners …

  5. TutorialsPoint
    https://www.tutorialspoint.com › javascript › ...

    JavaScript - Hello World Program - Online Tutorials Library

    Example Let's try to write a JavaScript program that prints the "Hello World!" to the document or web page. In the below program, we placed the JavaScript code …

  6. The Modern JavaScript Tutorial
    https://javascript.info › hello-world

    Hello, world! - The Modern JavaScript Tutorial

    Nov 1, 2021 · Hello, world! This part of the tutorial is about core JavaScript, the language itself. But we need a working environment to run our scripts and, since …

  7. CodingBroz
    https://www.codingbroz.com › javascript-hello-world-program

    JavaScript Hello World Program - CodingBroz

    In this post, we will learn how to write hello world program in JavaScript. We will be writing the hello world program using three different methods to print “Hello, World!”.

  8. Code2care
    https://code2care.org › pages › hello-world-javascript-tutorial

    Writing your first Hello, World! JavaScript code Tutorial

    Jul 26, 2020 · Here is how you can write your first Hello World! 🌍 program in JavaScript with code snippets & simple example & steps to save and execute your code.

  9. upGrad
    https://www.upgrad.com › ... › hello-world

    JavaScript Basics: Hello World & Interactive Coding Guide …

    Learn JavaScript from setup to interactive coding. Start with "Hello World," grasp the basics, and explore advanced concepts in this beginner-friendly guide.

  10. javaspring.net
    https://www.javaspring.net › javascript › javascript...

    JavaScript - Hello World Program: A Beginner's Guide

    JavaScript is one of the most popular programming languages in the world, widely used for web development, server - side scripting, and more. The Hello World program is a classic starting point for …

  11. coderscratchpad.com
    https://coderscratchpad.com › mastering-javascript...

    Getting Started with JavaScript - Coder Scratchpad

    Jun 16, 2023 · Learn how to create a 'Hello World' program in JavaScript and master the basics. Step-by-step guide to writing your first JavaScript program.

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