1 files changed, 4 insertions, 0 deletions

diff --git a/src/util/html.js b/src/util/html.js
index 6124b35d..f13f8c29 100644
--- a/src/util/html.js
+++ b/src/util/html.js
@@ -491,6 +491,10 @@ export class Attributes {
     return value;
   }
 
+  has(attribute) {
+    return attribute in this.#attributes;
+  }
+
   get(attribute) {
     return this.#attributes[attribute];
   }