diff --git a/frontend/web/assets/js/pop.js b/frontend/web/assets/js/pop.js
index a50b550..c56c460 100644
--- a/frontend/web/assets/js/pop.js
+++ b/frontend/web/assets/js/pop.js
@@ -11,9 +11,9 @@ $(function(){
 
 
     $(".model-bg").each(function (i) {
-        var _that=$(this);
+        let _that=$(this);
         _that.find(".nextPage").click(function () {
-            var key=i-1;
+            let key= i-1;
             console.log(key);
             _that.addClass("unchoose");
             $(".model-bg").eq(i+1).removeClass("unchoose");