How to call a function in external JavaScript file?

In javascript the function can be called using the following ways: To call a function in an external JavaScript file, you first need to include the reference of the JavaScript file in your HTML. You can add it in the head section using the script tag.

You can use an async or a defer attribute to execute the code as soon as the DOM is loaded. To call a function in an external JavaScript file, first include the JavaScript file in the head section of your HTML. You can add it using the script tag or you can use an async or a defer attribute to execute the code as soon as the DOM is loaded.

How to call a function defined in external JavaScript file?

You need to firstly declare your function in an external javascript file. Once the function is defined, you can call it from other JavaScript files. Just include the external JavaScript file in your HTML file and call the function as you normally would.

You can use the following keyword to call a function defined in an external JavaScript file: Call the function with the window object as the first parameter. You will need to include window in the list of arguments because the first argument of an event handler function is always the event object.

The window object refers to the browser window.

So, you can write a function declaration as follows:

How to call a JavaScript function defined in an external JavaScript file?

Here we want to call an existing function defined in an external JavaScript file. But first, you need to include the JavaScript file where the function is defined in the page where you are trying to call the function. This can be done in two ways: the first way is to use the