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How To Link JavaScript To HTML

Last Updated : Aug 19, 2023

How To Link JavaScript To HTML

In this article we will show you the solution of how to link JavaScript to HTML, for web sites to have dynamic functionality and interactivity, JavaScript must be linked to HTML.

You can build interactive user interfaces, validate forms, work with elements, and react to user input by fusing JavaScript and HTML.

There are a few straightforward procedures involved in linking JavaScript to HTML. Make a JavaScript file with the desired functionality first.

Then, place the script element within the frame or head section of the HTML file after establishing it in a textual content editor or code editor.

Use the src characteristic to specify the source file and encompass the area of the JavaScript file.

The accuracy and accessibility of the report paths ought to be guaranteed.

As an alternative, you can without delay enter JavaScript code in the HTML file's script tags.

To view the JavaScript script in movement, recall to keep each the HTML and JavaScript files and to open the HTML document in an internet browser.

Now we're going to communicate about the idea of linking javascript to html.

Step By Step Guide On How To Link JavaScript To HTML :-

<!DOCTYPE html>
<html>
<head>
  <title>JavaScript Linking Example</title>
  <script>
    // JavaScript code goes here
    function changeColor() {
      var element = document.getElementById("myDiv");
      element.style.backgroundColor = "red";
    }
  </script>
</head>
<body>
  <h1>JavaScript Linking Example</h1>
  <div id="myDiv" style="width: 200px; height: 200px; background-color: yellow;"></div>
  <button onclick="changeColor()">Change Color</button>
</body>
</html>
  1. We start our code with the help of the <!DOCTYPE html> tag to declare the document type.
  2. Then we write the title for the webpage's title in the head section of the HTML file. The title bar or tab of the browser will show this title.
  3. Our JavaScript code is entered within the script tag. We create a function named changeColor() that will be in charge of altering an element's background colour.
  4. We use document.getElementById() to locate the element with the ID "myDiv" when the changeColor() function is invoked. This element is kept in the element variable.
  5. Then we used the element's style property for changing the background colour.
  6. Then you can see that the background colour of the element is changed to red when the backgroundColor property is set to "red".
  7. Creating a h1 heading with the words "JavaScript Linking Example" in the body section. The main title of the webpage will be shown as this heading.
  8. A div element with the attribute value "myDiv" set is also included. Using the style tag, this div element has inline CSS styles set. The styles define a 200 pixel width, 200 pixel height, and a yellow initial background colour.
  9. A button element bearing the wording "Change Colour" is the last addition.
  10. When you clicks on the button, then the onclick property is configured to execute the changeColor() method.
  11. As an effect user will see the title, the div element with its initial yellow background colour, and the button when they load the HTML file in a web browser.
  12. The changeColor() function is activated when the button is clicked, changing the div element's background colour to red.

Conclusion :-

As a result, we've got successfully obtained the know-how necessary to link javascript to HTML.

A JavaScript file with the wanted functionality must be created, linked to the HTML file the usage of the <script> tag, and its file location need to be distinct.

I hope this article on how to link JavaScript to HTML helps you and the steps and method mentioned above are easy to follow and implement.

Author Image About Riya

A recent graduate with a Bachelor of Technology (B.Tech) in Computer Science from India. She is passionate about leveraging technology to solve real-world problems. With a strong foundation and experience in programming languages such as Python, Django, HTML, CSS, and JavaScript, java, php and have honed her skills through hands-on projects and coursework.

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