Fix incorrect type casting in some projects.

Author: Nde-Code

js/app.js

@@ -2,7 +2,7 @@ var globalData = {
 
     is_ES6: true,
 
-    modalbox_size: Math.round($(window).width() - 8) + "px",
+    modalbox_size: `${Math.round($(window).width() - 8)}px`,
 
     starting_width: $(document).width()
 

online/harmonic-waves.html

@@ -448,7 +448,7 @@ <h2>Notes:</h2>
 
 		var wavesSimulationData = {};
 
-		function setHTMLValueFormRange(val, id, unit) { return $('#' + id).html(val + unit); }
+		function setHTMLValueFormRange(val, id, unit) { return $(`#${id}`).html(`${val}${unit}`); }
 
 		function editDataValue(AOne, kOne, wOne, phiOne, sgnOne, ATwo, kTwo, wTwo, phiTwo, sgnTwo) {
 

online/meteorites-map.html

@@ -450,7 +450,7 @@
 
                 $("#modalbox-notes").css('left', 'unset');
 
-                $("#modalbox-notes").css('width', Math.round($(window).width() - 8) + "px");
+                $("#modalbox-notes").css('width', `${Math.round($(window).width() - 8)}px`);
 
             }