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  1. 123

    JavaScript is a powerful programming language that enhances the interactivity and dynamism of HTML pages. It allows developers to manipulate HTML elements, validate forms, handle events, and much more.

    Adding JavaScript to HTML

    There are two primary ways to add JavaScript to an HTML document: internal scripts and external scripts.

    Internal Scripts

    Internal scripts are written directly within the HTML document using the <script> tag. This method is useful for small scripts or when you want to keep the script within the same file as the HTML. Here is an example:

    <!DOCTYPE html>
    <html>
    <head>
    <title>Internal Script Example</title>
    <script>
    function showHiddenText() {
    document.getElementById("demo").innerHTML = "Hello World";
    }
    </script>
    </head>
    <body>
    <button onclick="showHiddenText()">Click me</button>
    <p id="demo"></p>
    </body>
    </html>
    Copied!

    In this example, clicking the button will trigger the showHiddenText function, which changes the content of the paragraph with the id "demo".

    External Scripts

    Feedback
  2. Programiz
    https://www.programiz.com › html › html-and-javascript

    HTML and Javascript (With Examples) - Programiz

    There are two ways to add javascript to your HTML file. 1. Adding an Internal Script 2. Adding an External Script
    Adding An Internal Script

    We can add Javascript to the HTML document by writing it inside a <script>tag. For example, Browser output(before click) Browser output(after click) In the above example, Hello Worldtext is shown after button click. Note: Generally, the script ta…

    Adding An External Script

    We can also use an external javascript file in our HTML document. To add an external script, we provide the location of the JS file to the src attribute of a <script>tag. For example, Here, we've used code.jsfile from the scripts folder in our HTML file. It is hel…

  3. W3School
    https://www.w3schools.com › html › html_scripts.asp

    HTML JavaScript - 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 …

    Code sample

    <script>
    document.getElementById("demo").innerHTML = "Hello JavaScript!";
    </script>
  4. GeeksForGeeks
    https://www.geeksforgeeks.org › html › html-javascript

    HTML JavaScript - GeeksforGeeks

    Jan 17, 2026 · JavaScript is added to an HTML document using the <script> tag to enable interactivity and dynamic behavior. JavaScript can be written directly inside the HTML file. An external .js file can …

  5. Skillcrush
    https://skillcrush.com › blog › projects-you-can-do-with-javascript

    21 Easy JavaScript Projects for Beginners (Code included!)

      1. Mouseover Element. You’ll see how JavaScript functions work and practice your JavaScript logic. …
      2. JavaScript Clock. You get hands-on with the kind of actual work you’ll be doing as a JavaScript …
      3. Magic 8 Ball. It gives you a solid foundation for how to use Math.random to produce randomized …
      4. To-Do List. You’ll beef up your skills at coding interactive lists, which lets users add, remove, and …
      5. Epic Mix Playlist. It helps you practice core JavaScript skills, such as forEach loops and event …
      See full list on skillcrush.com
  6. Mozilla Developer
    https://developer.mozilla.org › en-US › docs › Web › HTML › ...

    Add JavaScript to your web page - HTML | MDN - MDN Web Docs

    Sep 11, 2025 · Take your webpages to the next level by harnessing JavaScript. Learn in this article how to trigger JavaScript right from your HTML documents.

  7. TutorialsPoint
    https://www.tutorialspoint.com › html › html_javascript

    HTML - JavaScript - Online Tutorials Library

    JavaScript allows you to create dynamic and interactive HTML pages. JavaScript is a high-level programming language and core technology behind web developments. A script is a small piece of …

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  9. w3tutorials.net
    https://www.w3tutorials.net › javascript-tutorial › ...

    How to Implement JavaScript in HTML: A Quick Guide

    By integrating JavaScript with HTML, developers can create engaging user experiences, handle user input, and manipulate the Document Object Model (DOM). This guide will walk you through the …

  10. A Simple Guide to HTML
    http://www.simplehtmlguide.com › javascript.php

    JavaScript in HTML - A Simple Guide to HTML

    JavaScript in HTML - Learn how to include or embed javascript in your web page, handle basic mouse events, and see some basic example scripts.

  11. DigitalOcean
    https://www.digitalocean.com › community › tutorials › ...

    How to Add JavaScript to HTML for Beginners

    Jul 13, 2025 · Learn how to add JavaScript to HTML using script tags, inline code, and external files. Follow step-by-step examples.

  12. GeeksForGeeks
    https://www.geeksforgeeks.org › javascript › where-to...

    Adding JavaScript in HTML Document - GeeksforGeeks

    Mar 13, 2019 · JavaScript can be included in an HTML document to add interactivity and dynamic behavior to web pages. It allows the browser to execute …

    • Coursera
      https://www.coursera.org
      About our ads

      HTML Development Course - HTML, CSS, & JavaScript

      SponsoredEnroll in the IBM Full Stack Software Developer Professional Certificate program. Be ready for the job with the IBM Full Stack Software Developer Professional Certificate.

  14. Deep dive into JavaScript Programs in HTML

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