阻止重复提交

@@ -80,6 +80,7 @@ $addressForm.on('submit', function() {
 
     isSubmiting = true;
     loading.showLoadingMask();
+    $submit.css('background', '#777');
     $.ajax({
         method: 'POST',
         url: '/home/saveAddress',
@@ -102,6 +103,8 @@ $addressForm.on('submit', function() {
     }).fail(function() {
         tip.show('网络出了点问题~');
         isSubmiting = false;
+        loading.hideLoadingMask();
+        $submit.css('background', '#444');
     });
     return false;
 });