clean up variable declarations and indentation

website/load-map.js

@@ -1,5 +1,5 @@
 // add tile layer from OSM
-var baseMap =  L.tileLayer('https://api.mapbox.com/styles/v1/{id}/tiles/{z}/{x}/{y}?access_token={accessToken}', {
+const baseMap =  L.tileLayer('https://api.mapbox.com/styles/v1/{id}/tiles/{z}/{x}/{y}?access_token={accessToken}', {
   attribution: 'Map data &copy; <a href="https://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery © <a href="https://www.mapbox.com/">Mapbox</a>',
   maxZoom: 18,
     id: 'mapbox/dark-v10',
@@ -8,7 +8,7 @@ var baseMap =  L.tileLayer('https://api.mapbox.com/styles/v1/{id}/tiles/{z}/{x}/
     accessToken: 'pk.eyJ1IjoiaHVnaHIiLCJhIjoiY2lxenRqMGQyMDJvdWZwbWd0d2JxeGswNiJ9.vfUQRJDzbJhaG_865TSkPA'
 });
 
-var baseRules = L.tileLayer('https://api.mapbox.com/styles/v1/{id}/tiles/{z}/{x}/{y}?access_token={accessToken}', {
+const baseRules = L.tileLayer('https://api.mapbox.com/styles/v1/{id}/tiles/{z}/{x}/{y}?access_token={accessToken}', {
     attribution: 'Map data &copy; <a href="https://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery © <a href="https://www.mapbox.com/">Mapbox</a><br>Incorporates Administrative Boundaries ©PSMA Australia Limited licensed by the Commonwealth of Australia under Creative Commons Attribution 4.0 International licence (CC BY 4.0).',
     maxZoom: 18,
     id: 'mapbox/light-v10',
@@ -18,7 +18,7 @@ var baseRules = L.tileLayer('https://api.mapbox.com/styles/v1/{id}/tiles/{z}/{x}
       });
 
 // attach map to #mapid div above and centre
-var map = L.map('mapid', {
+const map = L.map('mapid', {
     center: [-27.00, 133.000],
     zoom: 5,
     layers: [baseMap]
@@ -43,7 +43,7 @@ L.TopoJSON = L.GeoJSON.extend({
 // -----------------------------------------------------------------
 
 // library services fines overlay
-var fines = new L.TopoJSON(libraryServices, {
+const fines = new L.TopoJSON(libraryServices, {
 style: function(feature){
     return {
       fillColor: getFinesColor(feature.properties.fines),
@@ -64,7 +64,7 @@ onEachFeature: function onEachFeature(feature, layer) {
 
 // fill patterns for loan period overlay
 
-var circles = new L.PatternCircle({
+const circles = new L.PatternCircle({
   color: '#000',
   weight: 1,
   radius: 2,
@@ -74,7 +74,7 @@ var circles = new L.PatternCircle({
   fillOpacity: 1
 });
 
-var loanTwo = new L.Pattern({
+const loanTwo = new L.Pattern({
   width: 8,
   height: 8
 })
@@ -82,12 +82,12 @@ var loanTwo = new L.Pattern({
 loanTwo.addShape(circles);
 loanTwo.addTo(map);
 
-var loanThree = new L.StripePattern({
+const loanThree = new L.StripePattern({
 color: '#000'
 }); 
 loanThree.addTo(map);
 
-var loanFour = new L.StripePattern({
+const loanFour = new L.StripePattern({
 color: '#000',
 weight: 6,
 spaceWeight: 2,
@@ -95,7 +95,7 @@ angle: 45
 }); 
 loanFour.addTo(map);
 
-var loanSix = new L.StripePattern({
+const loanSix = new L.StripePattern({
   color: '#000',
   weight: 2,
   spaceWeight: 6,
@@ -111,7 +111,7 @@ return  w == '2' ? loanTwo :
 }
 
 // loan period overlay
-var loanPeriod = new L.TopoJSON(libraryServices, {
+const loanPeriod = new L.TopoJSON(libraryServices, {
   style: function(feature){
     return {
       weight: 3,
@@ -122,7 +122,6 @@ style: function(feature){
       fillPattern: getLoanFillPattern(feature.properties.standard_loan_weeks)
     }
   },
-
   onEachFeature: function onEachFeature(feature, layer) {
     layer.on({
       mouseover: e => highlightFeature(e),
@@ -262,16 +261,16 @@ const otherLibs = L.layerGroup([
 // ++++++++++++++
 // control layers
 // ++++++++++++++
-var baseMaps = {
+const baseMaps = {
 "Libraries" : baseMap,
 // "Languages" : baseLang,
 "Rules" : baseRules,
 }
 
 // change the overlay name depending on the mode.
-var modeButton = document.getElementById('mode-button');
+const modeButton = document.getElementById('mode-button');
 
-var overlayMaps = {
+const overlayMaps = {
     "Settler Knowledge Centres" : branches,
     "Indigenous Knowledge Centres": ikcs,
     "Worker Pacification Centres" : mechsAndSoA,
@@ -326,7 +325,7 @@ function switchMode() {
 modeButton.addEventListener('click', switchMode, false);
 
 // add control layers
-var mapControl = L.control.layers(
+const mapControl = L.control.layers(
     baseMaps, 
     overlayMaps, 
     { "collapsed" : false }
@@ -336,7 +335,7 @@ var mapControl = L.control.layers(
 L.control.scale().addTo(map);
 
 // info boxes
-var infoBoxes = {
+const infoBoxes = {
   branches: L.control(),
   fines: L.control(),
   loanPeriod: L.control(),
@@ -353,7 +352,7 @@ return  f == 'no' ? '#4dac26' :
 
 // highlight feature on mouse hover
 function highlightFeature(e) {
-  var layer = e.target;
+  const layer = e.target;
   layer.setStyle({
     weight: 6,
     color: '#FF3961',