erro_message element hide if not contain error message

gadget_json_generated_form.js

@@ -603,7 +603,7 @@
       label,
       div_input,
       span_info,
-      span_error,
+      error_message,
       input,
       first_path,
       queue = RSVP.Queue();
@@ -732,9 +732,10 @@
       span_info.textContent = json_field.info;
       div_input.appendChild(span_info);
     }
-    span_error = document.createElement("span");
-    span_error.setAttribute("class", "error");
-    div_input.appendChild(span_error);
+    error_message = document.createElement("span");
+    error_message.setAttribute("class", "error");
+    error_message.hidden = true;
+    div_input.appendChild(error_message);
     div.appendChild(div_input);
 
     return queue
@@ -1235,8 +1236,9 @@
           var index,
             tasks = [];
 
-          g.element.querySelectorAll("span.error").forEach(function (span) {
-            span.textContent = "";
+          g.element.querySelectorAll(".error").forEach(function (error_message) {
+            error_message.textContent = "";
+            error_message.hidden = true;
           });
 
           g.element.querySelectorAll("div.error-input").forEach(function (div) {
@@ -1250,9 +1252,12 @@
           }
           function print_error(message) {
             return function (element) {
-              var id = element.id;
+              var id = element.id,
+                error_message;
               element.setAttribute("class", "error-input");
-              element.querySelector("#" + id.replace("/", "\\/") + " > span.error").textContent = message;
+              error_message = element.querySelector("#" + id.replace("/", "\\/") + " > .error");
+              error_message.textContent = message;
+              error_message.hidden = false;
             };
           }
           for (index in validation.errors) {