How to Add JavaScript to HTML

Want to add JavaScript to your HTML pages? Here’s a quick guide on how to do it without any fuss.

Checkout this video:

Introduction

JavaScript is a client-side scripting language that enables dynamic interaction with HTML content. In order for JavaScript to be used on an HTML page, the script tag must be included in the head or body of the document.

The script tag can be placed in the head or body of the document, but it is generally recommended that JavaScript code be placed at the end of the body element. This ensures that all HTML elements have been loaded before the JavaScript code is executed.

When placed at the end of the body element, the script tag should include the defer attribute. This tells the browser to wait to execute the JavaScript code until after the page has been loaded.

Adding JavaScript to an HTML Page

JavaScript is a programming language that can be used to make web pages more interactive. JavaScript can be used to create games, chatbots, and other web applications. In this article, we’ll show you how to add JavaScript to an HTML page.

Adding JavaScript Directly to an HTML Page

One way to add JavaScript to an HTML page is to directly embed the code into the page. To do this, you simply enclose the code you want to add in and tags.

For example, let’s say you wanted to add a simple alert message to a page. You could do this by adding the following code directly into the HTML:

When the above code is added to a page and loaded in a browser, the user will see an alert message like this:

Adding JavaScript to an HTML Page Using a File

Adding JavaScript code to an HTML page is very simple. You can do this by using the tag so that your page loads faster.

Here's a simple example of how to add JavaScript to an HTML page:

Conclusion

Now that you know the three different ways to add JavaScript to HTML, all that’s left to do is pick the right one for your project. If you want complete control over when and where your code runs, go with an inline event handler. If you need to run the same code on multiple elements, go with a traditional script tag in the head of your HTML file. But if you want to load your code dynamically without interrupting the rest of your HTML, use a JavaScript file.