/**
*
* Manipulating the DOM exercise.
* Exercise programmatically builds navigation,
* scrolls to anchors from navigation,
* and highlights section in viewport upon scrolling.
*
* Dependencies: None
*
* JS Version: ES2015/ES6
*
* JS Standard: ESlint
*
*/
/**
* Comments should be present at the beginning of each procedure and class.
* Great to have comments before crucial code sections within the procedure.
*/
/**
* Define Global Variables
*
*/
/**
* End Global Variables
* Start Helper Functions
*
*/
/**
* End Helper Functions
* Begin Main Functions
*
*/
// build the nav
// Add class ‘active’ to section when near top of viewport
// Scroll to anchor ID using scrollTO event
/**
* End Main Functions
* Begin Events
*
*/
// Build menu
// Scroll to section on link click
// Set sections as active
