diff --git a/public/static/common/js/app.js b/public/static/common/js/app.js
new file mode 100644
index 0000000..00bd757
--- /dev/null
+++ b/public/static/common/js/app.js
@@ -0,0 +1,30 @@
+
+const loading = {};
+loading.index = 0;
+loading.showCount = 0;
+loading.show = function (count) {
+
+    if (typeof count == 'undefined') {
+        count = 1;
+    }
+
+    if (loading.showCount == 0) {
+        loading.index = layer.load()
+    }
+
+    loading.showCount += count;
+}
+
+loading.hide = function () {
+
+    loading.showCount--;
+
+    if (loading.showCount < 0) {
+        loading.showCount = 0;
+    }
+
+    if (loading.showCount == 0) {
+        layer.close(loading.index);
+    }
+
+}
\ No newline at end of file