JavaScript is a programming language that is primarily used to create interactive front-end web applications. It is a high-level, dynamic, and interpreted programming language. JavaScript allows developers to create complex interactive web pages, dynamically update content, create animations, and handle user input. JavaScript is also supported by all major web browsers, including Chrome, Firefox, Safari, and Edge, which means that JavaScript code can run on any device that has a web browser. There are a few ways to add JavaScript to a webpage:

Add JavaScript To A Webpage: Inline Script

You can add JavaScript code directly into an HTML file using the “script” tag. The script tag should be placed within the “body” section of the HTML file. For example:

<!DOCTYPE html>
<html>
  <head>
    <title>Example</title>
  </head>
  <body>
    <script>
      // JavaScript code here
    </script>
  </body>
</html>

Add JavaScript To A Webpage: External Script

You can also create a separate JavaScript file and include it in the HTML file using the “src” attribute of the “script” tag. For example:

<!DOCTYPE html>
<html>
  <head>
    <title>Example</title>
  </head>
  <body>
    <script src="script.js"></script>
  </body>
</html>

Add JavaScript To A Webpage: Using an HTML Event

You can also add JavaScript code to be executed when a specific event occurs on a webpage. For example, you can use the “onclick” attribute to specify JavaScript code to be executed when a button is clicked.

<!DOCTYPE html>
<html>
  <head>
    <title>Example</title>
  </head>
  <body>
    <button onclick="alert('Hello, world!')">Click me</button>
  </body>
</html>

Add script tag with JavaScript code in the head section of the HTML. This is useful when you want to run script before the page loads.

<!DOCTYPE html>
<html>
  <head>
    <title>Example</title>
    <script>
      // JavaScript code here
    </script>
  </head>
  <body>
  </body>
</html>

These are some of the most common ways to add JavaScript to a webpage, but there are other methods as well.

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