Finished exercise 3 of chapter 10

Author: Drummingcoder

ch10exercise3.html

@@ -52,8 +52,13 @@
         break;
       case "click":
         if (target.className == "tabStrip-tab-hover") {
+          var newnum = 1;
+          while (newnum < 4) {
+            document.querySelector("[data-tab-number='" + newnum + "']").className = "tabStrip-tab";
+            newnum++;
+          }
           target.className = "tabStrip-tab-click";
-          var num = target.getAttribute("data-tabnumber");
+          var num = target.getAttribute("data-tab-number"); 
           showDescription(num);
         }
         break;