diff --git a/Libraries/LibJS/Runtime/Object.cpp b/Libraries/LibJS/Runtime/Object.cpp
index 5089300acc..34ee9e91ef 100644
--- a/Libraries/LibJS/Runtime/Object.cpp
+++ b/Libraries/LibJS/Runtime/Object.cpp
@@ -381,6 +381,17 @@ void Object::visit_children(Cell::Visitor& visitor)
         visitor.visit(value);
 }
 
+bool Object::has_property(const FlyString& property_name) const
+{
+    const Object* object = this;
+    while (object) {
+        if (object->has_own_property(property_name))
+            return true;
+        object = object->prototype();
+    }
+    return false;
+}
+
 bool Object::has_own_property(const FlyString& property_name) const
 {
     bool ok;
diff --git a/Libraries/LibJS/Runtime/Object.h b/Libraries/LibJS/Runtime/Object.h
index dfcc2ea93d..c8f36eb3c2 100644
--- a/Libraries/LibJS/Runtime/Object.h
+++ b/Libraries/LibJS/Runtime/Object.h
@@ -96,7 +96,9 @@ public:
     void set_prototype(Object*);
     bool has_prototype(const Object* prototype) const;
 
+    bool has_property(const FlyString& property_name) const;
     bool has_own_property(const FlyString& property_name) const;
+
     enum class PreferredType {
         Default,
         String,