... like this from HTML. The loadCSS.js file exposes a global loadCSS function that you can call to load CSS files programmatically, if needed. This is handy for cases where you need to dynamically load CSS from script. The code above will insert a new CSS stylesheet link after the last stylesheet or script that it finds in the page, and the function will return a reference to that link element, should you want to reference it later in your script.