When to use which binding type?

[joostf]

the-client-case/scripts/script.js

Lines 1 to 24 in edd5f9e

	let map;
	var buttonSelect = document.querySelector(".selectButton");
	var buttonList = document.querySelectorAll(".selectButton");
	var buttonSlide = document.querySelector("#side-out");
	var listAnimation = document.querySelector("#side-wrapper");
	var sortButton = document.querySelector("#sort-button");
	var listInformation = document.querySelectorAll(".zoneInfo");
	var searchIcon = document.querySelector("#search-icon");
	var buttonSlideFlip = document.querySelector("#side-out-flip");
	var searchBar = document.querySelector("#search-bar");
	var populateName = document.querySelectorAll(".nameJSON");
	var populateLocation = document.querySelectorAll(".locJSON");
	var populateFunction = document.querySelectorAll(".funJSON");
	var populateSize = document.querySelectorAll(".sizeJSON");
	var populateUse = document.querySelectorAll(".useJSON");
	var checkboxes = document.querySelectorAll("input[type=checkbox]");
	var sortSize = document.querySelector(".sortSize");
	var sortUse = document.querySelector(".sortUse");
	var sortFunc = document.querySelector(".sortFunc");
	var sortLoc = document.querySelector(".sortLoc");
	var sortStyling = document.querySelector(".sortHidden");
	var sortButton = document.querySelector("#sort-button");
	var filterStyling = document.querySelector(".filterHidden");
	var filterButton = document.querySelector("#filter-button");

https://codeburst.io/javascript-var-let-or-const-which-one-should-you-use-2fd521b050fa