Java Script (source)

View source for Java Script

principles to maintain
  1. JavaScript should not be required for basic usage (No reliance on JavaScript)
  2. JavaScript should only do what only JavaScript can do.
  3. ((https://en.wikipedia.org/wiki/Unobtrusive_JavaScript Unobtrusive JavaScript))

((https://developer.mozilla.org/en-US/docs/JavaScript/Reference JavaScript Reference))
((https://developer.mozilla.org/en-US/docs/Learn/HTML/Howto/Use_data_attributes How to Use HTML5 Data Attributes))