[jquery-cdn] Prefetch code.jquery.com

roots · Mar 26, 2017 · ee8e173 · ee8e173
1 parent 9045500
commit ee8e173
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/modules/jquery-cdn.php b/modules/jquery-cdn.php
@@ -21,6 +21,13 @@ function register_jquery() {
     true
   );
 
+  add_filter('wp_resource_hints', function ($urls, $relation_type) {
+    if ($relation_type === 'dns-prefetch') {
+      $urls[] = 'code.jquery.com';
+    }
+    return $urls;
+  }, 10, 2);
+
   add_filter('script_loader_src', __NAMESPACE__ . '\\jquery_local_fallback', 10, 2);
 }
 add_action('wp_enqueue_scripts', __NAMESPACE__ . '\\register_jquery', 100);