A JS library is composed of the URL of the JavaScript resource and/or a custom JS code that is automatically added in the of the template.
Implement a JS library by attaching it to a default template from the back-end.
1 – To add new JavaScript from back-end click on Live Editor > Web Resources
2 – The JS Library can be accessed by clicking on JS button.
3 – You can now add a new JS library or edit an existing one.
4 – Add a JS URL and Script to a JS library inside the content field.
If any CSS or Font resources are necessary to fully render the snippets refer to the respective libraries bellow: