[docs] Fix GA javascript. (cloudprober#331)

jumpojoy · Apr 12, 2023 · 1f8d571 · 1f8d571
1 parent 26a416e
commit 1f8d571
Showing 1 changed file with 8 additions and 6 deletions.
diff --git a/docs/layouts/partials/head/custom-head.html b/docs/layouts/partials/head/custom-head.html
@@ -50,10 +50,12 @@
   });
   /* Register handler to log search on blur */
   var query = document.querySelector('.query');
-  query.addEventListener('blur', function () {
-    if (this.value) {
-      var path = document.location.pathname;
-      ga('send', 'pageview', path + '?q=' + this.value);
-    }
-  });
+  if (query) {
+    query.addEventListener('blur', function () {
+      if (this.value) {
+        var path = document.location.pathname;
+        ga('send', 'pageview', path + '?q=' + this.value);
+      }
+    });
+  }
 </script>