LibWeb: Implement Element.getAttributeNode

3 files changed, 12 insertions, 0 deletions

diff --git a/Userland/Libraries/LibWeb/DOM/Element.cpp b/Userland/Libraries/LibWeb/DOM/Element.cpp
index 8c526472b5..adb878149e 100644
--- a/Userland/Libraries/LibWeb/DOM/Element.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Element.cpp
@@ -93,6 +93,13 @@ String Element::get_attribute(FlyString const& name) const
     return attribute->value();
 }
 
+// https://dom.spec.whatwg.org/#dom-element-getattributenode
+JS::GCPtr<Attr> Element::get_attribute_node(FlyString const& name) const
+{
+    // The getAttributeNode(qualifiedName) method steps are to return the result of getting an attribute given qualifiedName and this.
+    return m_attributes->get_attribute(name);
+}
+
 // https://dom.spec.whatwg.org/#dom-element-setattribute
 WebIDL::ExceptionOr<void> Element::set_attribute(FlyString const& name, String const& value)
 {
diff --git a/Userland/Libraries/LibWeb/DOM/Element.h b/Userland/Libraries/LibWeb/DOM/Element.h
index 0924bc78cc..c58f89b8ef 100644
--- a/Userland/Libraries/LibWeb/DOM/Element.h
+++ b/Userland/Libraries/LibWeb/DOM/Element.h
@@ -72,6 +72,8 @@ public:
     NamedNodeMap const* attributes() const { return m_attributes.ptr(); }
     Vector<String> get_attribute_names() const;
 
+    JS::GCPtr<Attr> get_attribute_node(FlyString const& name) const;
+
     DOMTokenList* class_list();
 
     WebIDL::ExceptionOr<bool> matches(StringView selectors) const;
diff --git a/Userland/Libraries/LibWeb/DOM/Element.idl b/Userland/Libraries/LibWeb/DOM/Element.idl
index dd7f9863de..addfe89d8a 100644
--- a/Userland/Libraries/LibWeb/DOM/Element.idl
+++ b/Userland/Libraries/LibWeb/DOM/Element.idl
@@ -1,4 +1,5 @@
 #import <CSS/CSSStyleDeclaration.idl>
+#import <DOM/Attr.idl>
 #import <DOM/ChildNode.idl>
 #import <DOM/DOMTokenList.idl>
 #import <DOM/InnerHTML.idl>
@@ -38,6 +39,8 @@ interface Element : Node {
     [SameObject] readonly attribute NamedNodeMap attributes;
     sequence<DOMString> getAttributeNames();
 
+    Attr? getAttributeNode(DOMString qualifiedName);
+
     HTMLCollection getElementsByTagName(DOMString tagName);
     HTMLCollection getElementsByTagNameNS(DOMString? namespace, DOMString localName);
     HTMLCollection getElementsByClassName(DOMString className);