Add google analytics to siteadd-google-analytics

1 files changed, 11 insertions, 0 deletions

diff --git a/_includes/head/custom.html b/_includes/head/custom.html
index 33b1508..def324f 100644
--- a/_includes/head/custom.html
+++ b/_includes/head/custom.html
@@ -1,3 +1,14 @@
 <!-- start custom head snippets -->
 
+{% if site.google_analytics and jekyll.environment == 'production' %}
+  <script async src="https://www.googletagmanager.com/gtag/js?id={{ site.google_analytics }}"></script>
+  <script>
+    window.dataLayer = window.dataLayer || [];
+    function gtag(){dataLayer.push(arguments);}
+    gtag('js', new Date());
+
+    gtag('config', '{{ site.google_analytics }}');
+  </script>
+{%- endif -%}
+
 <!-- end custom head snippets -->