index.html.in: use strict equality checks everywhere

diff --git a/index.html.in b/index.html.in
index e14b87df82b4899df299a1d2bb4c9bb54c803ea0..5ab677672fbb658b1d13170ffb5a6639237ee794 100644 (file)
--- a/index.html.in
+++ b/index.html.in
@@ -506,7 +506,7 @@
         const t = document.getElementById("ticket");
         const sn = document.getElementById("servicename");
 
-        if (params.get("servicename") == "Commuter Bus") {
+        if (params.get("servicename") === "Commuter Bus") {
           /* The top of the background is initially at y=246.859, and
            * we scale it by a factor of 1.12 to y=276.482 for a change
            * of 29.623. So after we scale it, we translate it upwards
@@ -523,7 +523,7 @@
            * tickets overlayed in inkscape */
           sn.setAttribute("transform", "translate(0 64.28)");
         }
-        else if (params.get("servicename") == "MARC Train") {
+        else if (params.get("servicename") === "MARC Train") {
           /* insane tricks are explained above */
           tbg.setAttribute("transform",
                            "translate(0 -72.378) scale(1 1.2932)");
@@ -625,7 +625,7 @@
         /* BaltimoreLink and MARC Train */
         let minutes = 90;
         const params = new URLSearchParams(document.location.search);
-        if (params.get("servicename") == "Commuter Bus") {
+        if (params.get("servicename") === "Commuter Bus") {
           /* Commuter bus tickets are only valid for ten minutes */
           minutes = 10;
         }
@@ -662,7 +662,7 @@
       function swap_day_night() {
         const sky = document.getElementById("sky");
 
-        if (sky.getAttribute("class") == "night") {
+        if (sky.getAttribute("class") === "night") {
           sky.setAttribute("fill", "#efb02f");
           sky.setAttribute("class", "day");
         }