diff --git a/public/index.html b/public/index.html
index 6f23ccd23..089eb3686 100644
--- a/public/index.html
+++ b/public/index.html
@@ -416,39 +416,39 @@ <h2></h2>
           }
         ];
 
-        var json = '[' +
-          '{' +
-            '"text": "Parent 1",' +
-            '"nodes": [' +
-              '{' +
-                '"text": "Child 1",' +
-                '"nodes": [' +
-                  '{' +
-                    '"text": "Grandchild 1"' +
-                  '},' +
-                  '{' +
-                    '"text": "Grandchild 2"' +
-                  '}' +
-                ']' +
-              '},' +
-              '{' +
-                '"text": "Child 2"' +
-              '}' +
-            ']' +
-          '},' +
-          '{' +
-            '"text": "Parent 2"' +
-          '},' +
-          '{' +
-            '"text": "Parent 3"' +
-          '},' +
-          '{' +
-            '"text": "Parent 4"' +
-          '},' +
-          '{' +
-            '"text": "Parent 5"' +
-          '}' +
-        ']';
+        var json = JSON.stringify([
+          {
+            "text": "Parent 1",
+            "nodes": [
+              {
+                "text": "Child 1"
+                "nodes": [
+                  {
+                    "text": "Grandchild 1"
+                  },
+                  {
+                    "text": "Grandchild 2"
+                  }
+                ]
+              },
+              {
+                "text": "Child 2"
+              }
+            ]
+          },
+          {
+            "text": "Parent 2"
+          },
+          {
+            "text": "Parent 3"
+          },
+          {
+            "text": "Parent 4"
+          },
+          {
+            "text": "Parent 5"
+          }
+        ]);
 
 
         $('#treeview1').treeview({