add Google Analytics 4 scripts in the <head> of index.html

wk3368 · wk3368 · commit 5d15c7321573 · 2022-03-21T23:49:56.000+08:00
diff --git a/themes/book/layouts/partials/docs/html-head.html b/themes/book/layouts/partials/docs/html-head.html
@@ -80,4 +80,12 @@
         // })
     })
 </script>
+<!-- Global site tag (gtag.js) - Google Analytics -->
+<script async src="https://www.googletagmanager.com/gtag/js?id=G-40FBSF4MFT"></script>
+<script>
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){dataLayer.push(arguments);}
+  gtag('js', new Date());
+  gtag('config', 'G-40FBSF4MFT');
+</script>
 <title>{{ partial "docs/title" . }} | {{ .Site.Title -}}</title>
