How to Execute JavaScript Logic Using an External File

In this tutorial, we will explore how to use JavaScript in an external file and include it across multiple HTML pages. This approach can help reduce the number of requests to a page and improve load times when using the same JavaScript functions on various web pages. Let's dive into an example of executing a print function with the aid of an external file.

First, create another file calledexternal.js. This is our external .js file where we can use this script tag:javascript
function f1() {
window.print();
}Now, paste it in the external file. To printx is equal to 10, or alternatively call the print function using thewindow.print()method, we will name this method asmf1.

Next, we need to link our external file to our HTML page. In the HTML head section, we have a script. Inside this script, use ansrcattribute and mention our file name:external.js. This is how you can add your external file to multiple HTML files:
```html<script src=