Add external Javascript libraries

External Javascript files can be added to your website. There are two ways to add them:
The first method:
The second method:
Using the first method, your Javascript files will be loaded together with the internal Javascript files if there are any. If asynchronous loading is selected, your files will also be loaded asynchronously. For the second method, you need to use the HTML code also in addition to the Javascript code like using the "<link>" tag for loading the Javascript file and "<script>" tag for the code.