Merge branch 'dev' of https://github.com/jerryc127/hexo-theme-butterfly into dev

.gitignore

@@ -1,2 +1,2 @@
 .DS_Store
-.DS_Store
+node_modules/

_config.yml

@@ -702,6 +702,12 @@ umami_analytics:
     # Umami Cloud (API key) / self-hosted Umami (token)
     token:
 
+# https://www.googletagmanager.com/
+google_tag_manager:
+  tag_id: 
+  # optional
+  domain: 
+
 # --------------------------------------
 # Advertisement
 # --------------------------------------

layout/includes/additional-js.pug

@@ -54,4 +54,8 @@ div
   if theme.busuanzi.site_uv || theme.busuanzi.site_pv || theme.busuanzi.page_pv
     script(async data-pjax src= theme.asset.busuanzi || '//busuanzi.ibruce.info/busuanzi/2.3/busuanzi.pure.mini.js')
 
-  != partial('includes/third-party/search/index', {}, { cache: true })
+  != partial('includes/third-party/search/index', {}, { cache: true })
+  
+  if (theme.google_tag_manager && theme.google_tag_manager.tag_id)
+    noscript
+      iframe(src=`${theme.google_tag_manager.domain ? theme.google_tag_manager.domain : 'https://www.googletagmanager.com'}/ns.html?id=${theme.google_tag_manager.tag_id}` height="0" width="0" style="display:none;visibility:hidden")