diff --git a/src/components/LeftNav/LeftNav.vue b/src/components/LeftNav/LeftNav.vue
index d445e9a..8ec15a1 100644
--- a/src/components/LeftNav/LeftNav.vue
+++ b/src/components/LeftNav/LeftNav.vue
@@ -63,13 +63,12 @@ export default {
         childCode = item.children[0].code;
       }
       if (!url) {
+        const path = window.location.href.split('?');
         if (this.code && code !== this.code) {
-          const path = window.location.href.split('?');
           window.location.href = path[0] + `?code=${childCode}`;
           this.$emit('changeCode', code);
           this.childCode = code;
         } else if (code === this.code) {
-          const path = window.location.href.split('?');
           window.location.href = path[0] + `?code=${code}`;
         }
       } else {